Added the link to the Google Groups at the bottom of the README in the
contribute section.

I also took some time to clean up the links that we have in the README.

Realized that all of the namespaces tests (or most anyways) should really be
passing before this get's crossed off the list. At least the ones related
to announcing events to the correct namespace.

Now that namespaces are working in both the API and via the Redis
push, I've updated to take this off of the "wishlist" at the bottom
of the site.