Fixed .gitignore (I think).
Added back the files that were deleted with the .gitignore stuff..
Worked on adding an open source cpu-only marching cubes implementation. Had to tweak many files a bit. You may get conflicts...  To tweak the marching cubes, go in the inspector of Particle, and play with Spray Orb Radiuses and Cut Number of Vertices etc. There is also a new slider added to the material of the voxels, to fade them away.