documentation lacks new clientWrite and socketio options

[tommedema]

The documentation lacks the new clientWrite and socketio options.

[sridatta]

We seemed to have missed that. I'll write those in tonight!

[ericz]

Obviously sridatta didn't write the documentation on the night of April 10th. We'll get this in there

[tommedema]

Documentation also incorrectly says that the connected events on the server return a clientId rather than a client.

[ericz]

Finally this can be put to rest. Also the ' incorrectly says that the connected events on the server return a clientId rather than a client.' has been fixed in an earlier commit.