Added operator overload in Rect_s struct.
Updated .gitignore
Fixed bugs on Rect_s.
Merge remote-tracking branch 'upstream/develop' into develop
Merge remote-tracking branch 'upstream/develop' into develop
Constructor of WindowSDL is protected now.
Unecessry includes were removed from WindowSDL header.
Added SwapBuffers command to Window class.
Merge pull request #6 from CronosTs/develop

Develop