[8Oct13 GCS] Started new branch for effects in progress.  Added test-data library to access JME particle textures.  Added particle effects and physical debris objects which appear when a Block is removed.  Added particle effect when explosive is removed.  Added code to GameBoard to remove particle emitters and debris after a certain time.

KNOWN ISSUES:
-Z-fighting occuring between particle emitters and board geometry
-Play hand button does not add particle emitters and debris to ArrayList of effects to be removed.  Effects generated from Blocks being removed by the play hand button last indefinitely.
[9Oct13 GCS] Intermediate step in particle development, please ignore.
[9Oct13 GCS] Fixed particle Z-fighting problem by making Board's front face completely invisible.  Applied texture to Block projectiles.
[9Oct13 GCS] Resolved issue of effects not being removed for Blocks triggered by Play Hand button.  Added code to playHand() which adds button removed blocks to appropriate ArrayList so that their effects are cleaned up.
[10Oct13 GCS] Merged master and effects branches and cleaned up conflicts.  Edited laser class to resolve previously mentioned exceptions.  Have marked all changed to Laser class with //CHANGED comment.