Merge pull request #85 from Ventrella/master

cleaned up Head.h (renamed members to start with "_")
removed 2 unneeded debug lines
Merge remote-tracking branch 'upstream/master'
Removed negation of front vector which was reversing yaw in avatar skeleton.
reversed x value in hand movement
Merge remote-tracking branch 'upstream/master'
reversed strafe left right, and commented-out updateAvatarHand