Delegate methods work far better than notifications, though I'm not sure how threads...

Delegate methods work far better than notifications, though I'm not sure how threads fit into the mix.

* Source/SocketWrapper.h: Updating the SocketWrapperDelegate informal protocol to use actual arguments instead of NSNotification
* Source/SocketWrapper.m:
(many): Change from using [NSNotificatinoCenter postNotification:] to just calling delegate methods
([SocketWrapper receive]): NSData can't take a pointer to an array, so we copy the buffer into another variable packet[] and send that to NSData