added PolygonRegionLoader for the AssetManager from libgdx-utils
fixed NPE in PolygonRegionLoader#getDependencies(..)
made javadoc for Input#getX() and getY() more understandable since it caused confusion
undo changes made by personal eclipse formatter
undid the changes made by the eclipse formatter, too. Eclipse pulls pranks on me
Merge pull request #1602 from dermetfan/master

added PolygonRegionLoader for the AssetManager