Two small fixes for FlixelNape:

- Fix for PostUpdate() no longer exists.
- Nape debug graphics were being draw on drawDebug cycle of flixel, which forces to use and see flixel debug to see nape debug graphics  ( please nooooo ).
Added @:isVar to x and y getter and setter so they are accessible as variables.
Merge remote-tracking branch 'HaxeFlixel/dev' into flixelNME

Conflicts:
	src/org/flixel/nape/FlxPhysSprite.hx
	src/org/flixel/nape/FlxPhysState.hx
Reverted changes from FlxPhysSprite.
Reverted changes from FlxPhysState (second try).
FlxGame updateInput() moved before FlxG.updatePlugins().
Merge remote-tracking branch 'origin/flixelNME' into flixelNME

Conflicts:
	src/org/flixel/plugin/photonstorm/FlxButtonPlus.hx
Merge pull request #445 from ProG4mr/flixelNME

Flixel nme