Added demo thumbnails.
* 04/07/2013 0.6 Build 52 *
---------------------------

* Changed. Some functions from Matrix objects to Matrix class.
* Added. Modification to CAAT.Math.Rectangle . if no parameters in constructor is set to empty.
* Fixed. CAAT.Foundation.UI.Label dependencies.
* Fixed. CAAT.Foundation.Actor dependencies.
* Added. Capture skeletal animation on-the-fly to an spriteSheet.