added exit gate, and 'white' holdout signals
Merge https://github.com/emfb760/brain-game

Conflicts:
	Ogre3DSeparateBuildSpace/Vinezors2.0/Vinezors2.0.xcodeproj/project.pbxproj
	Ogre3DSeparateBuildSpace/Vinezors2.0/Vinezors2.0/Tunnel.cpp