BUGFIX: Fixed multi-screen size support
Development enviroment setup
* fixed setup for AIR 3.5
* ignored /libs dir, in order to use my own built libraries and be able
to debug properly.
Merge branch 'bugfix/multi-screen-size' into development
removed testing traces
black background
Merge branch 'development' into 'bugfix/multi-screen-size'

* added the black background
added Splash screen
Added MenuNavigation support
Created MenuNavigationManager to control the navigation actions of the
game from a single point.
* added several menu States
* enabled an initial sequence of 3 states

(next stem should be adding buttons)
Refactor of MenuNavigationManager
Refactor of MenuNavigationManager
* forgot to commit BaseMenu class :P
Added buttons to move through menus.
Merge pull request #4 from AimarGonzlez/feature/menu-navigation-sistem

NEW FEATURE: menu navigation system