hubot-glip-himmat/webpack.config.babel.js

This whole work taken from [Tyler Long Hubot-Glip Adapter](https://github.com/tylerlong/hubot-glip) and apply few customization to it so it can work with interactive glip posts.

import nodeExternals from 'webpack-node-externals'
import path from 'path'

module.exports = {
  target: 'node',
  externals: [nodeExternals()],
  entry: ['babel-polyfill', './src/index.js'],
  output: {
    path: path.join(__dirname, 'src'),
    filename: 'index.bundle.js',
    libraryTarget: 'commonjs2'
  },
  module: {
    rules: [{
      test: /\.js$/,
      use: {
        loader: 'babel-loader'
      }
    }]
  }
}