Turn off the blue LED to save battery power

[bobo1on1]

This pull request turns off the blue LED on the Griffin PowerMate Bluetooth 2 seconds after each connect. This saves battery power, but events are still processed during the 2 second delay, so the functionality is not affected. The 2 second delay is needed because the LED will not turn off otherwise, this seems to be a problem with the device, as the event is still sent.