ExtractTextPluginの使い方（webpack） ref: http://qiita.com/tmw/items/dce42bb2d92fa208fe10

file1.txt

Module parse failed: 〜中略〜 Unexpected character '@' (1:0)
You may need an appropriate loader to handle this file type.

webpack.config.js

var ExtractTextPlugin = require('extract-text-webpack-plugin')
  , extractTextPlugin = new ExtractTextPlugin('stylesheets/[name].css');

module.exports = {
  entry: {
    'index': [
      './src/javascripts/modules/main/indexmain.js'
    ],
    'others': [
      './src/javascripts/modules/main/othersmain.js'
    ]
  },
  output: {
    path: path.join(__dirname, 'dist/assets/'),
    filename: "javascripts/[name].bundle.js"
  },
  module: {
    loaders: [
      { test: /\.js$/, loaders: ['babel-loader'], exclude: /node_modules/},
      { test: /\.css$/, loader: extractTextPlugin.extract("css-loader")},
      { test: /\.scss$/, loader: extractTextPlugin.extract("css!sass")},
    ]
  },
  plugins: [
    extractTextPlugin
  ]
};