message: correct the example webpack regex's
  These are written like string-based regex's for JSON, but are actually regex literals.
diff: @@ -19,10 +19,10 @@ Let's start with a common sort of webpack config file and translate it to a Jest
  module.exports = {
  module: {
  loaders: [
  - {exclude: ['node_modules'], loader: 'babel', test: /\\.jsx?$/},
  - {loader: 'style-loader!css-loader', test: /\\.css$/},
  - {loader: 'url-loader', test: /\\.gif$/},
  - {loader: 'file-loader', test: /\\.(ttf|eot|svg)$/},
  + {exclude: ['node_modules'], loader: 'babel', test: /\.jsx?$/},
  + {loader: 'style-loader!css-loader', test: /\.css$/},
  + {loader: 'url-loader', test: /\.gif$/},
  + {loader: 'file-loader', test: /\.(ttf|eot|svg)$/},
  ],
  },
  resolve: {
  