Added a click/touch directional pad to impact++. This is an alternative to the holdToMove and is managed by the PlayerManager. An example can be found in the jumpandrun example by uncommenting the section in the config-user.js
Fixed some off black pixels in the dpad_32.png image. Now the dpad doesn't jitter.
Renamed UiDpad to UIDpad to match the naming convention
Merge pull request #157 from lamphj/touch-dpad

Added a click/touch directional pad to impact++.