webpack.config.js

var path = require('path');

module.exports = {
  entry: '.',
  output: {
    path: path.join(__dirname, 'build'),
    publicPath: '/',
    filename: 'app.js'
  },
  module: {
    loaders: [
      {
        test: /\.jsx?$/,
        exclude: /node_modules/,
        loaders: [ 'babel' ]
      }
    ]
  }
};