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).
Improve template
Merge pull request #438 from Gama11/dev_template

Improve template
Added (GameFramerate < FlashFramerate) check in game constructor

game won't update without it
fixes for issues #437 and #441
Some cleanup for FlxSound
added FlxSoundUtil class.

It contains only one useful method - playWithCallback() - added only for
mobile targets
added FlxTypedEmitterExt - issue #430
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
FlxButtonPlus now extends FlxSpriteGroup - issue #431
little bit better text useShadow setter
added per-sprite smoothing on native targets (disabled by default).

use FLX_SPRITE_ANTIALIASING haxedef to enable it
Turned antialiasing into variable instead of property
Added warnings related to framerate settings

and started working on FlxText outlines