dropped python 2 support

Author: joeykrug

setup.py

@@ -40,8 +40,6 @@
     classifiers=[
         'Intended Audience :: Developers',
         'Natural Language :: English',
-        'Programming Language :: Python :: 2',
-        'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',