updated Makefiles for RPi devApps
Merge pull request #135 from jvcleave/fix-devApps-raspberrypi-makefiles

updated Makefiles for RPi devApps
removed ofxRaspberryPi as no longer required
removed ofxRaspberryPi references, some still exist in comments inside .mk files but maybe is best changed upstream
Merge pull request #136 from jvcleave/feature-remove-ofxRaspberryPi

remove ofxRaspberryPi as no longer needed
Merge pull request #1 from openFrameworks-RaspberryPi/develop-raspberrypi

Develop raspberrypi