[IMPROVEMENT] Directed closed fist

basic directed gesture with fist closed
[IMPROVEMENT] Add 2D gesture Recognition thanks to 1$ library
[IMPROVEMENT][CLOSES #77] Add Manager for 2D gestures
[IMPROVEMENT] Change cursor upon PushGesture recognition
[IMPROVEMENT] dummy elements to wrap cursor image now references ImagesDictionary
[IMPROVEMENT] Add param to gestures which can be set through Ctor
Merge pull request #83 from PLICMTI2014-IHM/leap

LeapMotion + LeapMotion.Recognize