added ofxDirection enum to put projector screen on one side of the main window
added ofxHighlightRects, which shows a label on a rect for a period of time
added ofxReprojectionUtils, containing misc util functions

to add:
 - coordinate transforms
 - rendering support functions?
typo
Workover on the calibration module. now shows initial status screen correctly. Will test with actual measurements.
del swap file
updated example-ofxONI2 to match ofxReprojection updates