Add React and Immutable
Update React to 0.11.2 and Immutable.

Immutable is [this version](https://github.com/facebook/immutable-js/blob/9fedc9883a252731faf5d18096af6d52a4b5fd68/dist/Immutable.js)
Merge pull request #9144 from adobe/dangoor/add-react

Add React and Immutable