Fix arbitrary sprite sheets

[hyperandroid]

Now only supported table sprite sheets where every sprite is of the same size.

[hyperandroid]

Welcome the method initializeFromMap(image|canvas, map) on SpriteActor object which takes the output from the tool
http://labs.hyperandroid.com/static/texture/spriter.html. This tools builds packed version of different images and generates either a CSS map or a CAAT JSON object.