Add instructions to README.md file

README.md

@@ -1,3 +1,70 @@
 # stylelint-config-scss
 
 Custom StyleLint settings for SCSS as an extensible shared config.
+
+## Installation
+
+If using npm version 5+:
+
+```bash
+npx install-peerdeps --dev @meteozdemir/stylelint-config-scss
+```
+
+If using npm version version < 5:
+
+```bash
+npm install -g install-peerdeps
+install-peerdeps --dev @meteozdemir/stylelint-config-scss
+```
+
+If want to install manually without install-peerdeps CLI:
+
+```bash
+npm i -D @meteozdemir/stylelint-config-scss stylelint stylelint-scss postcss postcss-scss stylelint-high-performance-animation stylelint-order stylelint-prettier
+```
+
+## Usage
+
+A `.stylelintrc.js` file will be automatically created in the root of your project with:
+
+```javascript
+module.exports = {
+    extends: [
+        '@meteozdemir/stylelint-config-scss',
+        '@meteozdemir/stylelint-config-scss/rules/prettier',
+    ],
+    rules: {},
+};
+```
+
+If the file is not created automatically by any reason, simply create a `.stylelintrc.js` file in the root of project and copy code above.
+
+## @meteozdemir/stylelint-config-scss/rules/prettier
+
+Prettier is enabled by default with this package and `@meteozdemir/stylelint-config-scss/rules/prettier` disables StyleLint rules that might conflict with Prettier.
+
+If you don't want to use Prettier, remove `'@meteozdemir/stylelint-config-scss/rules/prettier'` from `.stylelintrc.js` file.
+
+```javascript
+module.exports = {
+    extends: ['@meteozdemir/stylelint-config-scss'],
+    rules: {},
+};
+```
+
+## Rule Override
+
+Add any rule you want to override to rules object in `.stylelintrc.js` file.
+
+```javascript
+module.exports = {
+    extends: [
+        '@meteozdemir/stylelint-config-scss',
+        '@meteozdemir/stylelint-config-scss/rules/prettier',
+    ],
+    rules: {
+        'scss/at-import-partial-extension': 'always',
+        'scss/at-mixin-argumentless-call-parentheses': 'never',
+    },
+};
+```