message: green_book: Rend le port configurable pour Heroku
diff: @@ -2,6 +2,8 @@ var webpack = require('webpack')
  var WebpackDevServer = require('webpack-dev-server')
  var config = require('./webpack.config')
  +const PORT = process.env.PORT || 3000
  +
  new WebpackDevServer(webpack(config), {
  publicPath: config.output.publicPath,
  hot: true,
  @@ -21,8 +23,8 @@ new WebpackDevServer(webpack(config), {
  chunks: false,
  chunkModules: false
  }
  -}).listen(3000, '0.0.0.0', function (err) {
  +}).listen(PORT, '0.0.0.0', function (err) {
  if (err)
  console.log(err) //eslint-disable-line no-console
  - console.log('Bonjour ! Je vous sers sur localhost:3000') //eslint-disable-line no-console
  + console.log('Bonjour ! Je vous sers sur localhost:'+PORT) //eslint-disable-line no-console
  })
  