Added .tmx to allowed extensions

Currently CitrusEngine will throw an error if you try to load TiledMap .tmx file.
Merge pull request #15 from osro/master

Added .tmx to allowed file extensions
Added support for ATF
tiled map objectmaker uses dynamic tileset name.
we're now able to change the smoothing of an AnimationSequence
added a RevolvingPlatform thanks @Rhuno
Some cleaning
Now a PoolObject can be rendered through the State
Update README.md
optimized Ant
One Ant target to rule them all :)
ObjectMaker FromTiledMap support now multipe tileSets
Update README.md
update to V3.0.3
added dragon bones, created a new ObjectMakerStarling class
V3.0.4 meets the Dragon
Changed _input to protected to allow custom Input
added changelog file
Update LICENSE.md
AnimationSequence's dictionary is now accessible thanks to a getter.