Fixed boundind box size. Update RenderSkeletonization to work with
boost_pointer to Skeletonization3D. Delete_arm in Skeletonization2D
no longer necesary since bounding box already cuts the arm out
Save binary images vector in Skeletonization2D.
Changed several methods that used cv::Mat* for
cv::Mat&
Added methods to Skeletonization3D to proyect a 3D into a
2D camera view and the other way around.