Update to information about rooms section
Make it clear that io.sockets.manager.roomClients[socket.id] is a dict, not list.
added a simple and much needed explanation of broadcast
Updated Rooms (markdown)
.clients returns instances of Sockets, not socket IDs.
Revert 92355397e670965bc9d2bbe11211a8357a3e2cc9^ ... 92355397e670965bc9d2bbe11211a8357a3e2cc9
Destroyed Rooms (markdown)
Revert 9946ff30ef1345d7f9b534f45f53722a3a928a51^ ... 9946ff30ef1345d7f9b534f45f53722a3a928a51
fix some markup and code
Minor correction of join() name
Add some basic documentation on how to use rooms.