Optimized rendering speed dramatically using VBO's
Thickness of branches
Added ofxProcTree to tree scene
Merge branch 'vboRendering'

* vboRendering:
  Thickness of branches
  Optimized rendering speed dramatically using VBO's

Conflicts:
	Trae.xcodeproj/project.pbxproj
	src/Trae.cpp
	src/testApp.cpp
	src/testApp.h