Added Block.cpp, Block.h and Object.h to Xcode project, and fixed missing return values in Block::Init and Block::Draw
Added copyright notice to source files missing it.
Added AGPLab3 target and files and write toon shader code.
Modified toon shader to place light at camera.
Minor changes to BlockGame, and significantly changed toon effect.
Added toon scan blocking
Improved toon scan blocking.
Improved toon scan blocking again.