Detecting and supporting Tethering mode. #22

Hi,

I would like to use a phone in tethering mode to enable a phone strapped to a drone to broadcast video.

Tethered will allow me to launch the drone with the phone attached broadcastinf over its WiFi connection. I can then connect any other device to the AP and view live video from the drone.

Currently the code doesn't detect and support the the tethering mode. A reference below provides a way to detect.

http://stackoverflow.com/questions/9065592/how-to-detect-wifi-tethering-state