Initial OS X support. #87
Get RAM in MB. #87
It's no fun without textures. #87
Avoid 'unknown event' spam when testing with touchpad. #87
Added clock_gettime() for OS X which always returns monotonic time. #87
Added CLOCK_REALTIME support to our custom clock_gettime() function for OS X. #87

The monotonic part was written by Gavin Beatty
https://github.com/gavinbeatty/python-monotonic-time/blob/master/darwin.c
Merge pull request #117 from JanSimek/master

OS X support. #87