Merge pull request #8 from danny-andrews/patch-1

Add note about webpack version

src/docs/react-storybook/configurations/custom-webpack-config.js

@@ -4,6 +4,8 @@ export default {
   id: 'custom-webpack-config',
   title: 'Custom Webpack Config',
   content: stripIndent`
+    **NOTE: Storybook doesn't currently support webpack 2, so write your storybook webpack config to be webpack 1.x-compatable.**
+
     The default Webpack config of React Storybook is usually well balanced for a medium-size React project (specially created with [Create React App](https://github.com/facebookincubator/create-react-app)) or a library. But if you already have your own Webpack setup, that's not useable.
 
     That's why we allow you to customize our Webpack setup. There are a few ways to do it. Let's discuss: