Add setLed() to change kinect led
Sets led in threaded method. Fixes #101
Merge pull request #101 from rc1/feature-led-dev

Feature: ofxKinect::setLed(int mode)
changed led modes to enums, added led mode setting to example
Merge branch 'master' into develop
added to comments that setLed only works on mac/lin
Merge branch 'master' into develop
Merge branch 'develop' of https://github.com/ofTheo/ofxKinect into develop
bumped OSX example project SDK to Current OS for OF 0073