Wi-Fi tethering widget for lock screen.

This widget is a lock screen widget to toggle Wi-Fi tethering.

Features:
- Toggle Wi-Fi tethering just one tap.
- Add to lock screen as a widget
- Add to home screen as a regular widget
- Restore Wi-Fi state when tethering is off
- Simple and clean

Only tested on Nexus 7 (2012) with custom ROM.
(Please let me know if it worked on other devices.)

This widget may not work If your device does not supprt Wi-Fi tethering.