Merge pull request #2 from vianamp/DiscreteApproachOnly

Discrete approach only
Fully integrate with ssMitoThinning.

Binary projection is now save as PNG file.

Vector double *attributes is used to store results calculated by MitoGraph (e.g. surface-volume, length, skeleton-volume)

Summary file is now created where parameters and results are saved.

Non debug targets print nothing but results on screen.

Errors in MitoThinning concerning nodes of degree 2 and edges filtering were fixed.
Backup before merge.
SavePolyData arguments has been fixed.
Merge pull request #5 from vianamp/Skeletonization

Integration of MitoGraph and MitoThinning