add ./ to make add
add point cloud part, but bugs are fatal
stable version, intended to separate VoxelModel into a class
finish CVoxelModel class, using separate voxelmodel is awesome
change the neighbor probe method to parallel, and step-by-step presentation on skeleton extraction, still some bugs...
small change for thesis pictures
fix flooding bugs, and it works perfect. Next step is to change default load way to point cloud
tmp
rm Tree.ply
clear the mind: 1. load point cloud 2. index voxel 3. extract skeleton..  things to do-> change models during operation
small change