Still working on degree-2 junctions deletion.
Nodes and edges properly detected.

Still missing edges extension and better way to deal with nodes of
degree zero (isolated one voxel components).
Merge branch 'master' of https://github.com/vianamp/MitoThinning

Conflicts:
	MitoThinning
	MitoThinning.cpp
	cell01_binary.vtk
	cell01_thinning.vtk
	mitograph.files
	polydata.vtk