Finalize move over to Java 7

Issue #42 resolved
Michael Ludwig
repo owner created an issue

LWJGL 2.9.0 was just released and includes support for Java 7 on Mac OS X. JOGL's NEWT library already does. This should be the last thing stopping the move to Java 7. It might be as simple as updating my Maven dependency.

I will want to go through my resource loading code and update everything to use the new Java 7 file and try-with-resources code.