diff --git a/docs/Makefile b/docs/Makefile
new file mode 100644
index 0000000000000..69fe55ecfa9aa
--- /dev/null
+++ b/docs/Makefile
@@ -0,0 +1,19 @@
+# Minimal makefile for Sphinx documentation
+#
+
+# You can set these variables from the command line.
+SPHINXOPTS    =
+SPHINXBUILD   = sphinx-build
+SOURCEDIR     = source
+BUILDDIR      = build
+
+# Put it first so that "make" without argument is like "make help".
+help:
+	@$(SPHINXBUILD) -M help "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
+
+.PHONY: help Makefile
+
+# Catch-all target: route all unknown targets to Sphinx using the new
+# "make mode" option.  $(O) is meant as a shortcut for $(SPHINXOPTS).
+%: Makefile
+	@$(SPHINXBUILD) -M $@ "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
\ No newline at end of file
diff --git a/docs/markdown2rst.py b/docs/markdown2rst.py
new file mode 100644
index 0000000000000..cc488298f9f90
--- /dev/null
+++ b/docs/markdown2rst.py
@@ -0,0 +1,720 @@
+#!/usr/bin/env python3
+"""
+    markdown to rst
+"""
+# -*- coding: utf-8 -*-
+
+from __future__ import print_function, unicode_literals
+import os
+import os.path
+import re
+import sys
+from argparse import ArgumentParser, Namespace
+
+from docutils import statemachine, nodes, io, utils
+from docutils.parsers import rst
+from docutils.core import ErrorString
+from docutils.utils import SafeString, column_width
+import mistune
+
+if sys.version_info < (3, ):
+    from codecs import open as _open
+    from urlparse import urlparse
+else:
+    _open = open
+    from urllib.parse import urlparse
+
+__version__ = '0.2.1'
+_is_sphinx = False
+prolog = '''\
+.. role:: raw-html-m2r(raw)
+   :format: html
+
+'''
+
+# for command-line use
+parser = ArgumentParser()
+options = Namespace()
+parser.add_argument(
+    'input_file', nargs='*', help='files to convert to reST format')
+parser.add_argument(
+    '--overwrite',
+    action='store_true',
+    default=False,
+    help='overwrite output file without confirmaion')
+parser.add_argument(
+    '--dry-run',
+    action='store_true',
+    default=False,
+    help='print conversion result and not save output file')
+parser.add_argument(
+    '--no-underscore-emphasis',
+    action='store_true',
+    default=False,
+    help='do not use underscore (_) for emphasis')
+parser.add_argument(
+    '--parse-relative-links',
+    action='store_true',
+    default=False,
+    help='parse relative links into ref or doc directives')
+parser.add_argument(
+    '--anonymous-references',
+    action='store_true',
+    default=False,
+    help='use anonymous references in generated rst')
+parser.add_argument(
+    '--disable-inline-math',
+    action='store_true',
+    default=False,
+    help='disable parsing inline math')
+
+
+def parse_options():
+    """parse_options"""
+    parser.parse_known_args(namespace=options)
+
+
+class RestBlockGrammar(mistune.BlockGrammar):
+    """RestBlockGrammar"""
+    directive = re.compile(
+        r'^( *\.\..*?)\n(?=\S)',
+        re.DOTALL | re.MULTILINE, )
+    oneline_directive = re.compile(
+        r'^( *\.\..*?)$',
+        re.DOTALL | re.MULTILINE, )
+    rest_code_block = re.compile(
+        r'^::\s*$',
+        re.DOTALL | re.MULTILINE, )
+
+
+class RestBlockLexer(mistune.BlockLexer):
+    """RestBlockLexer"""
+    grammar_class = RestBlockGrammar
+    default_rules = [
+        'directive',
+        'oneline_directive',
+        'rest_code_block',
+    ] + mistune.BlockLexer.default_rules
+
+    def parse_directive(self, m):
+        """parse_directive"""
+        self.tokens.append({
+            'type': 'directive',
+            'text': m.group(1),
+        })
+
+    def parse_oneline_directive(self, m):
+        """parse_oneline_directive"""
+        # reuse directive output
+        self.tokens.append({
+            'type': 'directive',
+            'text': m.group(1),
+        })
+
+    def parse_rest_code_block(self, m):
+        """parse_rest_code_block"""
+        self.tokens.append({'type': 'rest_code_block', })
+
+
+class RestInlineGrammar(mistune.InlineGrammar):
+    """RestInlineGrammar"""
+    image_link = re.compile(
+        r'\[!\[(?P<alt>.*?)\]\((?P<url>.*?)\).*?\]\((?P<target>.*?)\)')
+    rest_role = re.compile(r':.*?:`.*?`|`[^`]+`:.*?:')
+    rest_link = re.compile(r'`[^`]*?`_')
+    inline_math = re.compile(r'.*\$(.*)?\$')
+    eol_literal_marker = re.compile(r'(\s+)?::\s*$')
+    # add colon and space as special text
+    text = re.compile(r'^[\s\S]+?(?=[\\<!\[:_*`~ ]|https?://| {2,}\n|$)')
+    # __word__ or **word**
+    double_emphasis = re.compile(r'^([_*]){2}(?P<text>[\s\S]+?)\1{2}(?!\1)')
+    # _word_ or *word*
+    emphasis = re.compile(r'^\b_((?:__|[^_])+?)_\b'  # _word_
+                          r'|'
+                          r'^\*(?P<text>(?:\*\*|[^\*])+?)\*(?!\*)'  # *word*
+                          )
+
+    def no_underscore_emphasis(self):
+        """no_underscore_emphasis"""
+        self.double_emphasis = re.compile(
+            r'^\*{2}(?P<text>[\s\S]+?)\*{2}(?!\*)'  # **word**
+        )
+        self.emphasis = re.compile(
+            r'^\*(?P<text>(?:\*\*|[^\*])+?)\*(?!\*)'  # *word*
+        )
+
+
+class RestInlineLexer(mistune.InlineLexer):
+    """RestInlineLexer"""
+    grammar_class = RestInlineGrammar
+    default_rules = [
+        'image_link',
+        'rest_role',
+        'rest_link',
+        'eol_literal_marker',
+    ] + mistune.InlineLexer.default_rules
+
+    def __init__(self, *args, **kwargs):
+        no_underscore_emphasis = kwargs.pop('no_underscore_emphasis', False)
+        disable_inline_math = kwargs.pop('disable_inline_math', False)
+        super(RestInlineLexer, self).__init__(*args, **kwargs)
+        if not _is_sphinx:
+            parse_options()
+        if no_underscore_emphasis or getattr(options, 'no_underscore_emphasis',
+                                             False):
+            self.rules.no_underscore_emphasis()
+        inline_maths = 'inline_math' in self.default_rules
+        if disable_inline_math or getattr(options, 'disable_inline_math',
+                                          False):
+            if inline_maths:
+                self.default_rules.remove('inline_math')
+        elif not inline_maths:
+            self.default_rules.insert(0, 'inline_math')
+
+    def output_double_emphasis(self, m):
+        """output_double_emphasis"""
+        # may include code span
+        text = self.output(m.group('text'))
+        return self.renderer.double_emphasis(text)
+
+    def output_emphasis(self, m):
+        """output_emphasis"""
+        # may include code span
+        text = self.output(m.group('text') or m.group(1))
+        return self.renderer.emphasis(text)
+
+    def output_image_link(self, m):
+        """Pass through rest role."""
+        return self.renderer.image_link(
+            m.group('url'), m.group('target'), m.group('alt'))
+
+    def output_rest_role(self, m):
+        """Pass through rest role."""
+        return self.renderer.rest_role(m.group(0))
+
+    def output_rest_link(self, m):
+        """Pass through rest link."""
+        return self.renderer.rest_link(m.group(0))
+
+    def output_inline_math(self, m):
+        """Pass through rest link."""
+        return self.renderer.inline_math(m.group(0))
+
+    def output_eol_literal_marker(self, m):
+        """Pass through rest link."""
+        marker = ':' if m.group(1) is None else ''
+        return self.renderer.eol_literal_marker(marker)
+
+
+class RestRenderer(mistune.Renderer):
+    """RestRenderer"""
+    _include_raw_html = False
+    list_indent_re = re.compile(r'^(\s*(#\.|\*)\s)')
+    indent = ' ' * 3
+    list_marker = '{#__rest_list_mark__#}'
+    hmarks = {
+        1: '=',
+        2: '-',
+        3: '^',
+        4: '~',
+        5: '"',
+        6: '#',
+    }
+
+    def __init__(self, *args, **kwargs):
+        self.parse_relative_links = kwargs.pop('parse_relative_links', False)
+        self.anonymous_references = kwargs.pop('anonymous_references', False)
+        super(RestRenderer, self).__init__(*args, **kwargs)
+        if not _is_sphinx:
+            parse_options()
+            if getattr(options, 'parse_relative_links', False):
+                self.parse_relative_links = options.parse_relative_links
+            if getattr(options, 'anonymous_references', False):
+                self.anonymous_references = options.anonymous_references
+
+    def _indent_block(self, block):
+        return '\n'.join(self.indent + line if line else ''
+                         for line in block.splitlines())
+
+    def _raw_html(self, html):
+        self._include_raw_html = True
+        return '\ :raw-html-m2r:`{}`\ '.format(html)
+
+    def block_code(self, code, lang=None):
+        """block_code"""
+        if lang == 'math':
+            first_line = '\n.. math::\n\n'
+        elif lang:
+            first_line = '\n.. code-block:: {}\n\n'.format(lang)
+        elif _is_sphinx:
+            first_line = '\n.. code-block:: guess\n\n'
+        else:
+            first_line = '\n.. code-block::\n\n'
+        return first_line + self._indent_block(code) + '\n'
+
+    def block_quote(self, text):
+        """block_quote"""
+        # text includes some empty line
+        return '\n..\n\n{}\n\n'.format(self._indent_block(text.strip('\n')))
+
+    def block_html(self, html):
+        """Rendering block level pure html content.
+
+        :param html: text content of the html snippet.
+        """
+        return '\n\n.. raw:: html\n\n' + self._indent_block(html) + '\n\n'
+
+    def header(self, text, level, raw=None):
+        """Rendering header/heading tags like ``<h1>`` ``<h2>``.
+
+        :param text: rendered text content for the header.
+        :param level: a number for the header level, for example: 1.
+        :param raw: raw text content of the header.
+        """
+        return '\n{0}\n{1}\n'.format(text,
+                                     self.hmarks[level] * column_width(text))
+
+    def hrule(self):
+        """Rendering method for ``<hr>`` tag."""
+        return '\n----\n'
+
+    def list(self, body, ordered=True):
+        """Rendering list tags like ``<ul>`` and ``<ol>``.
+
+        :param body: body contents of the list.
+        :param ordered: whether this list is ordered or not.
+        """
+        mark = '#. ' if ordered else '* '
+        lines = body.splitlines()
+        for i, line in enumerate(lines):
+            if line and not line.startswith(self.list_marker):
+                lines[i] = ' ' * len(mark) + line
+        return '\n{}\n'.format('\n'.join(lines)).replace(self.list_marker,
+                                                         mark)
+
+    def list_item(self, text):
+        """Rendering list item snippet. Like ``<li>``."""
+        return '\n' + self.list_marker + text
+
+    def paragraph(self, text):
+        """Rendering paragraph tags. Like ``<p>``."""
+        return '\n' + text + '\n'
+
+    def table(self, header, body):
+        """Rendering table element. Wrap header and body in it.
+
+        :param header: header part of the table.
+        :param body: body part of the table.
+        """
+        table = '\n.. list-table::\n'
+        if header and not header.isspace():
+            table = (table + self.indent + ':header-rows: 1\n\n' +
+                     self._indent_block(header) + '\n')
+        else:
+            table = table + '\n'
+        table = table + self._indent_block(body) + '\n\n'
+        return table
+
+    def table_row(self, content):
+        """Rendering a table row. Like ``<tr>``.
+
+        :param content: content of current table row.
+        """
+        contents = content.splitlines()
+        if not contents:
+            return ''
+        clist = ['* ' + contents[0]]
+        if len(contents) > 1:
+            for c in contents[1:]:
+                clist.append('  ' + c)
+        return '\n'.join(clist) + '\n'
+
+    def table_cell(self, content, **flags):
+        """Rendering a table cell. Like ``<th>`` ``<td>``.
+
+        :param content: content of current table cell.
+        :param header: whether this is header or not.
+        :param align: align of current table cell.
+        """
+        return '- ' + content + '\n'
+
+    def double_emphasis(self, text):
+        """Rendering **strong** text.
+
+        :param text: text content for emphasis.
+        """
+        return '\ **{}**\ '.format(text)
+
+    def emphasis(self, text):
+        """Rendering *emphasis* text.
+
+        :param text: text content for emphasis.
+        """
+        return '\ *{}*\ '.format(text)
+
+    def codespan(self, text):
+        """Rendering inline `code` text.
+
+        :param text: text content for inline code.
+        """
+        if '``' not in text:
+            return '\ ``{}``\ '.format(text)
+        else:
+            # actually, docutils split spaces in literal
+            return self._raw_html('<code class="docutils literal">'
+                                  '<span class="pre">{}</span>'
+                                  '</code>'.format(
+                                      text.replace('`', '&#96;')))
+
+    def linebreak(self):
+        """Rendering line break like ``<br>``."""
+        if self.options.get('use_xhtml'):
+            return self._raw_html('<br />') + '\n'
+        return self._raw_html('<br>') + '\n'
+
+    def strikethrough(self, text):
+        """Rendering ~~strikethrough~~ text.
+
+        :param text: text content for strikethrough.
+        """
+        return self._raw_html('<del>{}</del>'.format(text))
+
+    def text(self, text):
+        """Rendering unformatted text.
+
+        :param text: text content.
+        """
+        return text
+
+    def autolink(self, link, is_email=False):
+        """Rendering a given link or email address.
+
+        :param link: link content or email address.
+        :param is_email: whether this is an email or not.
+        """
+        return link
+
+    def link(self, link, title, text):
+        """Rendering a given link with content and title.
+
+        :param link: href link for ``<a>`` tag.
+        :param title: title content for `title` attribute.
+        :param text: text content for description.
+        """
+        if self.anonymous_references:
+            underscore = '__'
+        else:
+            underscore = '_'
+        if title:
+            return self._raw_html(
+                '<a href="{link}" title="{title}">{text}</a>'.format(
+                    link=link, title=title, text=text))
+        if not self.parse_relative_links:
+            return '\ `{text} <{target}>`{underscore}\ '.format(
+                target=link, text=text, underscore=underscore)
+        else:
+            url_info = urlparse(link)
+            if url_info.scheme:
+                return '\ `{text} <{target}>`{underscore}\ '.format(
+                    target=link, text=text, underscore=underscore)
+            else:
+                link_type = 'doc'
+                anchor = url_info.fragment
+                if url_info.fragment:
+                    if url_info.path:
+                        # Can't link to anchors via doc directive.
+                        anchor = ''
+                    else:
+                        # Example: [text](#anchor)
+                        link_type = 'ref'
+                doc_link = '{doc_name}{anchor}'.format(
+                    # splittext approach works whether or not path is set. It
+                    # will return an empty string if unset, which leads to
+                    # anchor only ref.
+                    doc_name=os.path.splitext(url_info.path)[0],
+                    anchor=anchor)
+                return '\ :{link_type}:`{text} <{doc_link}>`\ '.format(
+                    link_type=link_type, doc_link=doc_link, text=text)
+
+    def image(self, src, title, text):
+        """Rendering a image with title and text.
+
+        :param src: source link of the image.
+        :param title: title text of the image.
+        :param text: alt text of the image.
+        """
+        # rst does not support title option
+        # and I couldn't find title attribute in HTML standard
+        return '\n'.join([
+            '',
+            '.. image:: {}'.format(src),
+            '   :target: {}'.format(src),
+            '   :alt: {}'.format(text),
+            '',
+        ])
+
+    def inline_html(self, html):
+        """Rendering span level pure html content.
+
+        :param html: text content of the html snippet.
+        """
+        return self._raw_html(html)
+
+    def newline(self):
+        """Rendering newline element."""
+        return ''
+
+    def footnote_ref(self, key, index):
+        """Rendering the ref anchor of a footnote.
+
+        :param key: identity key for the footnote.
+        :param index: the index count of current footnote.
+        """
+        return '\ [#fn-{}]_\ '.format(key)
+
+    def footnote_item(self, key, text):
+        """Rendering a footnote item.
+
+        :param key: identity key for the footnote.
+        :param text: text content of the footnote.
+        """
+        return '.. [#fn-{0}] {1}\n'.format(key, text.strip())
+
+    def footnotes(self, text):
+        """Wrapper for all footnotes.
+
+        :param text: contents of all footnotes.
+        """
+        if text:
+            return '\n\n' + text
+        else:
+            return ''
+
+    """Below outputs are for rst."""
+
+    def image_link(self, url, target, alt):
+        """image_link"""
+        return '\n'.join([
+            '',
+            '.. image:: {}'.format(url),
+            '   :target: {}'.format(target),
+            '   :alt: {}'.format(alt),
+            '',
+        ])
+
+    def rest_role(self, text):
+        """rest_role"""
+        return text
+
+    def rest_link(self, text):
+        """rest_link"""
+        return text
+
+    def inline_math(self, math):
+        """Extension of recommonmark"""
+        return re.sub(r'\$(.*?)\$',
+                      lambda x: '\ :math:`{}`\ '.format(x.group(1)), math)
+
+    def eol_literal_marker(self, marker):
+        """Extension of recommonmark"""
+        return marker
+
+    def directive(self, text):
+        """directive"""
+        return '\n' + text + '\n'
+
+    def rest_code_block(self):
+        """rest_code_block"""
+        return '\n\n'
+
+
+class M2R(mistune.Markdown):
+    """M2R"""
+
+    def __init__(self,
+                 renderer=None,
+                 inline=RestInlineLexer,
+                 block=RestBlockLexer,
+                 **kwargs):
+        if renderer is None:
+            renderer = RestRenderer(**kwargs)
+        super(M2R, self).__init__(
+            renderer, inline=inline, block=block, **kwargs)
+
+    def parse(self, text):
+        """parse"""
+        output = super(M2R, self).parse(text)
+        return self.post_process(output)
+
+    def output_directive(self):
+        """output_directive"""
+        return self.renderer.directive(self.token['text'])
+
+    def output_rest_code_block(self):
+        """output_rest_code_block"""
+        return self.renderer.rest_code_block()
+
+    def post_process(self, text):
+        """post_process"""
+        output = (text.replace('\\ \n', '\n').replace('\n\\ ', '\n')
+                  .replace(' \\ ', ' ').replace('\\  ', ' ')
+                  .replace('\\ .', '.'))
+        if self.renderer._include_raw_html:
+            return prolog + output
+        else:
+            return output
+
+
+class M2RParser(rst.Parser, object):
+    """M2RParser"""
+    # Explicitly tell supported formats to sphinx
+    supported = ('markdown', 'md', 'mkd')
+
+    def parse(self, inputstrings, document):
+        """parse"""
+        if isinstance(inputstrings, statemachine.StringList):
+            inputstring = '\n'.join(inputstrings)
+        else:
+            inputstring = inputstrings
+        config = document.settings.env.config
+        converter = M2R(no_underscore_emphasis=config.no_underscore_emphasis,
+                        parse_relative_links=config.m2r_parse_relative_links,
+                        anonymous_references=config.m2r_anonymous_references,
+                        disable_inline_math=config.m2r_disable_inline_math)
+        super(M2RParser, self).parse(converter(inputstring), document)
+
+
+class MdInclude(rst.Directive):
+    """Directive class to include markdown in sphinx.
+
+    Load a file and convert it to rst and insert as a node. Currently
+    directive-specific options are not implemented.
+    """
+    required_arguments = 1
+    optional_arguments = 0
+    option_spec = {
+        'start-line': int,
+        'end-line': int,
+    }
+
+    def run(self):
+        """Most of this method is from ``docutils.parser.rst.Directive``.
+
+        docutils version: 0.12
+        """
+        if not self.state.document.settings.file_insertion_enabled:
+            raise self.warning('"%s" directive disabled.' % self.name)
+        source = self.state_machine.input_lines.source(
+            self.lineno - self.state_machine.input_offset - 1)
+        source_dir = os.path.dirname(os.path.abspath(source))
+        path = rst.directives.path(self.arguments[0])
+        path = os.path.normpath(os.path.join(source_dir, path))
+        path = utils.relative_path(None, path)
+        path = nodes.reprunicode(path)
+
+        # get options (currently not use directive-specific options)
+        encoding = self.options.get(
+            'encoding', self.state.document.settings.input_encoding)
+        e_handler = self.state.document.settings.input_encoding_error_handler
+        tab_width = self.options.get('tab-width',
+                                     self.state.document.settings.tab_width)
+
+        # open the including file
+        try:
+            self.state.document.settings.record_dependencies.add(path)
+            include_file = io.FileInput(
+                source_path=path, encoding=encoding, error_handler=e_handler)
+        except UnicodeEncodeError as error:
+            raise self.severe('Problems with "%s" directive path:\n'
+                              'Cannot encode input file path "%s" '
+                              '(wrong locale?).' %
+                              (self.name, SafeString(path)))
+        except IOError as error:
+            raise self.severe('Problems with "%s" directive path:\n%s.' %
+                              (self.name, ErrorString(error)))
+
+        # read from the file
+        startline = self.options.get('start-line', None)
+        endline = self.options.get('end-line', None)
+        try:
+            if startline or (endline is not None):
+                lines = include_file.readlines()
+                rawtext = ''.join(lines[startline:endline])
+            else:
+                rawtext = include_file.read()
+        except UnicodeError as error:
+            raise self.severe('Problem with "%s" directive:\n%s' %
+                              (self.name, ErrorString(error)))
+
+        config = self.state.document.settings.env.config
+        converter = M2R(no_underscore_emphasis=config.no_underscore_emphasis,
+                        parse_relative_links=config.m2r_parse_relative_links,
+                        anonymous_references=config.m2r_anonymous_references,
+                        disable_inline_math=config.m2r_disable_inline_math)
+        include_lines = statemachine.string2lines(
+            converter(rawtext), tab_width, convert_whitespace=True)
+        self.state_machine.insert_input(include_lines, path)
+        return []
+
+
+def setup(app):
+    """When used for sphinx extension."""
+    global _is_sphinx
+    _is_sphinx = True
+    app.add_config_value('no_underscore_emphasis', False, 'env')
+    app.add_config_value('m2r_parse_relative_links', False, 'env')
+    app.add_config_value('m2r_anonymous_references', False, 'env')
+    app.add_config_value('m2r_disable_inline_math', False, 'env')
+    app.add_source_parser('.md', M2RParser)
+    app.add_directive('mdinclude', MdInclude)
+    metadata = dict(
+        version=__version__,
+        parallel_read_safe=True,
+        parallel_write_safe=True, )
+    return metadata
+
+
+def convert(text, **kwargs):
+    """convert"""
+    return M2R(**kwargs)(text)
+
+
+def parse_from_file(file, encoding='utf-8', **kwargs):
+    """parse_from_file"""
+    if not os.path.exists(file):
+        raise OSError('No such file exists: {}'.format(file))
+    with _open(file, encoding=encoding) as f:
+        src = f.read()
+    output = convert(src, **kwargs)
+    return output
+
+
+def save_to_file(file, src, encoding='utf-8', **kwargs):
+    """save_to_file"""
+    target = os.path.splitext(file)[0] + '.rst'
+    if not options.overwrite and os.path.exists(target):
+        confirm = input('{} already exists. overwrite it? [y/n]: '.format(
+            target))
+        if confirm.upper() not in ('Y', 'YES'):
+            print('skip {}'.format(file))
+            return
+    with _open(target, 'w', encoding=encoding) as f:
+        f.write(src)
+
+
+def main():
+    """main"""
+    parse_options()  # parse cli options
+    if not options.input_file:
+        parser.print_help()
+        parser.exit(0)
+    for file in options.input_file:
+        output = parse_from_file(file)
+        if options.dry_run:
+            print(output)
+        else:
+            save_to_file(file, output)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/docs/source/conf.py b/docs/source/conf.py
new file mode 100644
index 0000000000000..415f3add50bb6
--- /dev/null
+++ b/docs/source/conf.py
@@ -0,0 +1,173 @@
+# -*- coding: utf-8 -*-
+#
+# Configuration file for the Sphinx documentation builder.
+#
+# This file does only contain a selection of the most common options. For a
+# full list see the documentation:
+# http://www.sphinx-doc.org/en/master/config
+
+# -- Path setup --------------------------------------------------------------
+
+# If extensions (or modules to document with autodoc) are in another directory,
+# add these directories to sys.path here. If the directory is relative to the
+# documentation root, use os.path.abspath to make it absolute, like shown here.
+#
+# import os
+# import sys
+# sys.path.insert(0, os.path.abspath('.'))
+
+
+# -- Project information -----------------------------------------------------
+
+project = u'PLSC'
+copyright = u'2020, Paddle Authors'
+author = u'Paddle Authors'
+
+# The short X.Y version
+version = u''
+# The full version, including alpha/beta/rc tags
+release = u''
+
+
+# -- General configuration ---------------------------------------------------
+
+# If your documentation needs a minimal Sphinx version, state it here.
+#
+# needs_sphinx = '1.0'
+
+# Add any Sphinx extension module names here, as strings. They can be
+# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
+# ones.
+extensions = [
+]
+
+# Add any paths that contain templates here, relative to this directory.
+templates_path = ['_templates']
+
+# The suffix(es) of source filenames.
+# You can specify multiple suffix as a list of string:
+#
+# source_suffix = ['.rst', '.md']
+source_suffix = '.rst'
+
+# The master toctree document.
+master_doc = 'index'
+
+# The language for content autogenerated by Sphinx. Refer to documentation
+# for a list of supported languages.
+#
+# This is also used if you do content translation via gettext catalogs.
+# Usually you set "language" from the command line for these cases.
+language = u'zh'
+
+# List of patterns, relative to source directory, that match files and
+# directories to ignore when looking for source files.
+# This pattern also affects html_static_path and html_extra_path.
+exclude_patterns = []
+
+# The name of the Pygments (syntax highlighting) style to use.
+pygments_style = None
+
+
+# -- Options for HTML output -------------------------------------------------
+
+# The theme to use for HTML and HTML Help pages.  See the documentation for
+# a list of builtin themes.
+#
+html_theme = 'alabaster'
+
+# Theme options are theme-specific and customize the look and feel of a theme
+# further.  For a list of options available for each theme, see the
+# documentation.
+#
+# html_theme_options = {}
+
+# Add any paths that contain custom static files (such as style sheets) here,
+# relative to this directory. They are copied after the builtin static files,
+# so a file named "default.css" will overwrite the builtin "default.css".
+html_static_path = ['_static']
+
+# Custom sidebar templates, must be a dictionary that maps document names
+# to template names.
+#
+# The default sidebars (for documents that don't match any pattern) are
+# defined by theme itself.  Builtin themes are using these templates by
+# default: ``['localtoc.html', 'relations.html', 'sourcelink.html',
+# 'searchbox.html']``.
+#
+# html_sidebars = {}
+
+
+# -- Options for HTMLHelp output ---------------------------------------------
+
+# Output file base name for HTML help builder.
+htmlhelp_basename = 'PLSCdoc'
+
+
+# -- Options for LaTeX output ------------------------------------------------
+
+latex_elements = {
+    # The paper size ('letterpaper' or 'a4paper').
+    #
+    # 'papersize': 'letterpaper',
+
+    # The font size ('10pt', '11pt' or '12pt').
+    #
+    # 'pointsize': '10pt',
+
+    # Additional stuff for the LaTeX preamble.
+    #
+    # 'preamble': '',
+
+    # Latex figure (float) alignment
+    #
+    # 'figure_align': 'htbp',
+}
+
+# Grouping the document tree into LaTeX files. List of tuples
+# (source start file, target name, title,
+#  author, documentclass [howto, manual, or own class]).
+latex_documents = [
+    (master_doc, 'PLSC.tex', u'PLSC Documentation',
+     u'Paddle Authors', 'manual'),
+]
+
+
+# -- Options for manual page output ------------------------------------------
+
+# One entry per manual page. List of tuples
+# (source start file, name, description, authors, manual section).
+man_pages = [
+    (master_doc, 'plsc', u'PLSC Documentation',
+     [author], 1)
+]
+
+
+# -- Options for Texinfo output ----------------------------------------------
+
+# Grouping the document tree into Texinfo files. List of tuples
+# (source start file, target name, title, author,
+#  dir menu entry, description, category)
+texinfo_documents = [
+    (master_doc, 'PLSC', u'PLSC Documentation',
+     author, 'PLSC', 'One line description of project.',
+     'Miscellaneous'),
+]
+
+
+# -- Options for Epub output -------------------------------------------------
+
+# Bibliographic Dublin Core info.
+epub_title = project
+
+# The unique identifier of the text. This can be a ISBN number
+# or the project homepage.
+#
+# epub_identifier = ''
+
+# A unique identification for the text.
+#
+# epub_uid = ''
+
+# A list of files that should not be packed into the epub file.
+epub_exclude_files = ['search.html']
diff --git a/docs/source/index.rst b/docs/source/index.rst
new file mode 100644
index 0000000000000..baa75eed1b8bb
--- /dev/null
+++ b/docs/source/index.rst
@@ -0,0 +1,20 @@
+.. PLSC documentation master file, created by
+   sphinx-quickstart on Thu Feb 27 10:54:35 2020.
+   You can adapt this file completely to your liking, but it should at least
+   contain the root `toctree` directive.
+
+Welcome to PLSC's documentation!
+================================
+
+.. toctree::
+   :maxdepth: 2
+   :caption: Contents:
+
+
+
+Indices and tables
+==================
+
+* :ref:`genindex`
+* :ref:`modindex`
+* :ref:`search`