docs: add CSS Modules Demos link

ruanyf · ruanyf · commit f73b8b95ef10 · 2016-06-04T09:52:29.000+08:00
diff --git a/README.md b/README.md
@@ -7,6 +7,7 @@ These demos are purposely written in a simple and clear style. You will find no
 - [Flux Demo](https://github.com/ruanyf/extremely-simple-flux-demo)
 - [Webpack Demos](https://github.com/ruanyf/webpack-demos)
 - [React Router Tutorial](https://github.com/reactjs/react-router-tutorial)
+- [CSS Modules Demos](https://github.com/ruanyf/css-modules-demos)
 - [React Testing Demo](https://github.com/ruanyf/react-testing-demo)
 - [A boilerplate for React-Babel-Webpack project](https://github.com/ruanyf/react-babel-webpack-boilerplate)
 
