.
Merge branch 'develop' of https://github.com/tuxskar/pixmind.git into develop
fixed zoom issue,  maybe...
responsiveness fixed on pix guy arrow controller
camera working smoother
deleted unused variables
new icon :D
delete icon
new icon
separated MapZoom and Box2D contact Listener
added a Class for render the game, PixMindWorldRenderer and a class that
initialice the Scene2D
change name of PixMindScene2D to PixMindScene2DInitialization
separating code into class
modifications to make possible to instantiate only once each class
packing clases
not relevant
irrelevants changes
Fixed colors activations with new class diagram
Fixed more than one similar color plotted on the GUI with more than one activator