title: import scss file with Storybook
body: <p>I'm currently facing an issue with Storybook. Everything is working great in my app, with webpack. Storybook seems to have issue with my configuration.</p>
  
  <p>Here's my webpack.config.js :</p>
  
  <pre><code>module.exports = {
     entry: './index.js',
     output: {
     path: path.join(__dirname, 'dist'),
     filename: 'bundle.js'
  },
  module: {
     loaders: [
     {
        test: /\.js$/,
        loader: 'babel-loader',
        exclude: /node_modules/,
        include: __dirname
     },
     {
        test: /\.scss$/,
           use: [
           {loader: "style-loader"}, 
           {loader: "css-loader"},
           {loader: "sass-loader",
            options: {
              includePaths: [__dirname]
      }
    }]
  },
  </code></pre>
  
  <p>Storybook have issue with parsing the scss file, do I need to create a specific webpack.config.js for Storybook to solve this?</p>
  
  <p>In my main app I'm importing my scss file this way : <code>import './styles/base.scss'</code></p>