Merge pull request #3 from TheComet93/master

Removed OIS event system and got it to compile on linux
Merge pull request #4 from TheComet93/feature/cmake

Feature/cmake
Introducing a functional cmake build system
Ogre3D downloads automatically now
Merge pull request #5 from TheComet93/feature/cmake

Ogre3D downloads automatically now
Ogre dependencies download automatically (hopefully)