FlxZoomCamera: Update for FlxCamera changes
FlxButtonPlus: Fix graphics on flash target (previously broken due to FlxSpriteGroup changes) and remove screenCenter() (there's FlxSpriteUtil.screenCenter())
FlxButtonPlus: Add default values for constructor params
FlxButtonPlus: Fix graphic on cpp targets
FlxTilemapExt: Clarify setSlopes() parameter descriptions, closes #30
README.md: Adjust logo URL
Update for move of FlxMisc.openURL() to FlxStringUtil
FlxTypeText: Use @:sound for the default sound, remove setSound() / setSkipKeys(), compatibility with FLX_NO_SOUND_SYSTEM
Update .travis.yml
Move flixel-ui shapes by @larsiusprime to flixel-addons
Remove references to FlxG.paused
Update for change of FlxSprite.calcFrame()
Merge branch 'master' into dev

Conflicts:
	flixel/addons/plugin/effects/fx/StarfieldFX.hx
	flixel/addons/text/FlxTypeText.hx
Rename param of calcFrame() to RunOnCpp
Replace UInt by Int
Compile fixes
Some more compile fixes for flixel-conditionals
Compatiblity update for FlxG.keyboard API change (HaxeFlixel/flixel@273d2272c3d41c27464deefa03d96811cadfd9e7)
include.xml: Add NAPE_NO_INLINE to prevent a build error on neko, HaxeFlixel/flixel-demos#75
Update for keyboard API change (HaxeFlixel/flixel@d7acd6a143b60ec79580448be2447cff98391db8)