webpack的CommonsChunkPlugin插件

暂时先放代码，他日完善说明

 plugins: [
       new ExtractTextPlugin("[name]/css/[name].css"),
       new webpack.optimize.CommonsChunkPlugin({
           name: "vendor",
           minChunks: Infinity
       }),
       new webpack.ProvidePlugin({
            $: 'jquery',
            jQuery: 'jquery',
            'window.jQuery': 'jquery'
       })
  ],

entry: {
      user: "./src/entry/user",
      vendor: ["jquery","bootstrap"]
  },