old_contents: module.exports = {
      entry: './app/main',
      output: {
          filename: 'bundle.js'
      },
      module: {
          loaders: [{
              test: /\.js$/,
              exclude: /node_modules/,
              loader: 'babel',
              query: {
                  presets: ['es2015']
              }
          }]
      }
  };
  
new_contents: module.exports = {
      entry: './app/main.js',
      output: {
          path: path.join(__dirname, 'dist'),
          filename: 'bundle.js',
          publicPath: './dist/'
      },
      module: {
          loaders: [
              {
                  test: /\.js$/,
                  exclude: /node_modules/,
                  loader: 'babel',
                  query: {
                      presets: ['es2015']
                  }
              },
  	    {
                  test: /\.css$/,
                  loader: 'style!css'
              },
  	    {
                  test: /\.(jpg|png)$/,
                  loader: 'url?limit=8192'
              }
          ]
      }
  };
  
subject: Update webpack.config.js