updated gitignore to not include files in the images directory for testing purposes
Merge remote-tracking branch 'upstream/master' into swivel
Merge pull request #17 from famousWidgets/swivel

Add swivel functionality and integrate with translateScale, depth, and rotate
Merge remote-tracking branch 'upstream/master' into swivel
added velocity to rotate factor. need rotate on origin, not edge
Merge pull request #18 from gregorylull/swivel

added velocity to rotate factor. need rotate on origin, not edge