React Coffee

Yes,
This is yet another framework/language combination.

However, it is, in my opinion at least, a very nice one.
The code is really easy to write and read, so I though it would be worth a pull request, even if it does not make it to the main repo.

A [demo](http://crubier.github.io/todomvc-react-coffee/) is available on my Github, along with the [sources](https://github.com/crubier/todomvc-react-coffee).

It passes all tests pass with no problem.

Thank you very much for your attention.