Custom Fps Limiter

First time contributing. Set FPS limit on second page of graphics
settings. Press Tab key or on 360 controller, press left stick to toggle
between 3 states. 1st state is standard 60 fps. 2nd state is the custom limit. 3rd state is unthrottled (2000 fps)

Sorry if i did anything wrong. Again, this is my first time using github, first time contributing to an open source, and probably 5th time using C++ professionally. So if there are any cleanups or improvements, let me know because i really want to learn.

Also, have no idea why my vcxproj was included. Remove it if possible.