Merge pull request #9246 from vovkasm/cmake-fix-glfw3-include-dirs

Fix finding glfw3 on ubuntu 14.10
Director users a low-pass filter to display the FPS

FPS is more stable. Uses a 5% low-pass filter
Merge pull request #9258 from ricardoquesada/fps_low_pass_filter

Director users a low-pass filter to display the FPS