Game ported 

* Game ported. SDL 1.x functions can be used in SDL 2.0.1. I just changed a little here and there
* Timer functions are not ported as I'm not familiar with it.
* Crashes on colour assignment in square class
* Managed to run on mac with Uint64, BUT blitting in game.cpp crashes
* Released some dynamically allocated pointers

I'm sorry I couldn't fix the bugs and fully port it