Merge pull request #36 from bjz/add-methods

Add some more methods to NSWindow and remove msgsend.m
Added some functions and types used for glutin
Added some functions and types used for glutin
Added NSDate and NSEvent functions to handle events in the glutin crate
Added some functions used for mouse events
Added more NSEvent functions for glutin
Added more functions to grab NSEvent keycodes
Fixed some merge issues
Removed NSEventSubtype, as it's only available from 10.10
Merge pull request #34 from DavidPartouche/glutin

Added some functions and types used for glutin
Remove method traits