Added code splitting with require.ensure.

[leifdalan]

• Used require.ensure to enable code splitting
• Used example of dispatching load begin and load end redux actions to be able to respond in the parent connect view

[haocse]

I got this warning, anyone has the solution?

Warning: React attempted to reuse markup in a container but the checksum was invalid. This generally means that you are using server rendering and the markup generated on the server was not what the client was expecting. React injected new markup to compensate which works but you have lost many of the benefits of server rendering. Instead, figure out why the markup being generated is different on the client or server:
(client) <!-- react-empty: 1 -
(server) <div class="app___3sz

[grgur]

Good work there. I reused your excellent commit and tuned it a little to enable named chunks and fix SSR - CSR issues that @haovn577 mentioned above. PR #1298