Understanding normals
Added mesh in both branch and tree

Merge branch 'master' of https://github.com/mrbichel/ofxProcTree

* 'master' of https://github.com/mrbichel/ofxProcTree:
  Some floats to ints.
  Branch split overloaded.
  Constructor with branch that takes vec3f.
  More is defined
  added branch class

Conflicts:
	src/ofxProcTree.h