- https://webpack.github.io/docs/code-splitting.html
- https://gist.github.com/sokra/27b24881210b56bbaff7#code-splitting-with-es6
- https://github.com/webpack/webpack/tree/master/examples/code-splitting
- https://gist.github.com/acdlite/a68433004f9d6b4cbc83b5cc3990c194 (RRv4)
- http://jonathancreamer.com/webpack-code-splitting-with-es6-and-babel-6/
- http://jonathancreamer.com/advanced-webpack-part-2-code-splitting/
- http://jonathancreamer.com/advanced-webpack-part-3-creating-a-custom-notifier-plugin/
- http://survivejs.com/webpack/building-with-webpack/splitting-bundles/
- http://survivejs.com/webpack/advanced-techniques/understanding-chunks/
- https://medium.com/@puppybits/webpack-code-splitting-by-routes-92f96cf733f2#.aqnbqqnhm
- http://moduscreate.com/code-splitting-for-react-router-with-es6-imports/
- http://henleyedition.com/implicit-code-splitting-with-react-router-and-webpack/ds