Feature: Support for k4w and 1473 kinect with motor / accel / led control. 

Support for k4w and 1473 kinect with motor and led control. 
- LED control 
- Motor control
- Accel data 

Based on the excellent proof of concept code by Drew Fisher ( @zarvox ).

Also: 
- Uploads audio firmware from ofxKinectExtras.h
- Checks to see if 1473 or K4W can be controlled ( ie: firmware has been uploaded ) 
- Updates OF with latest libfreenect

Don't merge yet - I need to test this with K4W.

For the newer 1473 device this seems to work really well. 
Would be great to get some help testing on Windows and Nix especially those who have the 1473 Kinect. 
@danomatika

Notes:
- 1473 device seems to deactivate the IR projector when tilting. Reactivates when tilting has stopped. Need to check and see if that is normal behavior for this model. 
- 1473 device sometimes leaves the IR projector on, on exit. Seems to be to do with tilting. Should be easy to solve.