Changed vbo usage to GL_STREAM_DRAW
Moved render related updates to render method
Changed vertices array to TexturedVertex (since they're all
TexturedVertices)
Added vertex updating (let's do the harlem shake)
Moved shader and texture initialization to dedicated methods
Added projection Matrix
Added model Matrix to Cube
Added matrices to vertex shader
Added Camera class (pretty much empty)
Managed to add movement through matrix translation
Added rotation