Fix size of trimmed SheetImage sprites

When sprites were trimmed using TexturePacker, their original size was not preserved.
Using a MOAIBoundsDeck, they now appear at the original size again.
Merge pull request #41 from theGoodEvil/sheetimage_atlas_bounds

[Flower] Fix size of trimmed SheetImage sprites
Extend SheetImage sample with cropped sprites

I recreated the Texture Packer sprite sheet and set the "Trim mode"
to "Crop, flush position" instead of "Trim". In the sample you can
now see that the trimmed sprites have 64x64 pixel bounds, while the
cropped ones are smaller.

The cropped sprites are rendered as they are, while the trimmed ones
use a MOAIBoundsDeck (see cef53f81d677e1ab703b99222974ddeaa1a933a9).
Merge pull request #42 from theGoodEvil/crop_sample

Extend SheetImage sample with cropped sprites
Merge branch 'master' into dev