use Image.Format.ABGR8 and custom function to re-order color into ByteBuffer to work with jme-3.0.10.
The hack could be remove when jme 3.1 will be used as dependency
download dependencies from official JME3 maven repository.
remove useless try/catch block introduced during experimentation.

fix #22
Merge pull request #23 from davidB/master

use jme 3.0.10 from official maven repo