Added comment to #endif for header guards
Draft started on PassThroughShader.cpp

* Begun implementation in PassThroughShader.cpp.

* Removed 'Renderer' class since it was now uneccesaryand moved the gl functions to constructor of Window. initLightSource function got moved to BaseShaderProgram. Each shader will now need to implement this to use lights.
Renamed files, implemented layout qualifiers for attributes in shaders.
Basic implementation for SSAO shader + some refactoring.
Refactored model array to vector

* Vector is used so there is no longer any need for explicit defined sizes.
* Added compiler flag in makefile to avoid c++11 warnings.
Minor fixes