Added class vec2, added tests to Vec2Tests.cpp to test constructor, addition, and scalar multiplication operators.
Refactored vec2 class to separate operator definitions into separate file "Vec2.inl"
Removed *.lib from .gitignore, added .lib files from glew, Qt
Edited .gitignore to ignore some local glew lib files
Removed cmake files (.cmake and .prl) from qt lib directory
Moved Vec2 class into Math folder.