WiFly

This is my first pull request. Sorry if there are any issues.

I've added basic support for using a WiFly -> 3DR Radio bridge. I have tested it and can confirm that it works. Unfortunately I haven't quite figure out how to still get cellular communications to go through while connected to the WiFly but at least I can talk to my copter.
Apologies for the state of our Comm stack. Looks like you got it worked out though. Very cool.