Add a README

Author: lnhrdt

README.md

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+# react-app-rewire-css-modules
+
+Add [CSS Module](https://github.com/css-modules/css-modules) loaders to your [create-react-app](https://github.com/facebookincubator/create-react-app) via [react-app-rewired](https://github.com/timarney/react-app-rewired).
+
+CSS Module styles can be written in CSS or SASS.
+
+## Installation
+
+This package is not yet published to the npm registry. Install from GitHub:
+
+```
+yarn add --dev codebandits/react-app-rewire-css-modules sass-loader node-sass
+```
+
+OR
+
+```
+npm install --save-dev codebandits/react-app-rewire-css-modules sass-loader node-sass
+```
+
+## Usage
+
+In your react-app-rewired configuration:
+
+```javascript
+/* config-overrides.js */
+
+const rewireCssModules = require('react-app-rewire-css-modules');
+
+module.exports = function override(config, env) {
+    // ...
+    config = rewireCssModules(config, env);
+    // ...
+    return config;
+}
+```
+
+In your React application:
+
+```scss
+// src/App.scss
+
+.app {
+  color: aqua;
+  
+  &:hover {
+    color: lawngreen;
+  }
+}
+```
+
+```jsx harmony
+// src/App.js
+
+import React from 'react';
+import styles from './App.scss';
+
+export default ({text}) => (
+    <div className={styles.app}>{text}</div>
+)
+```