closed #2427: Exposing cc.FileUtils.getInstance().createDictionaryWithContentsOfFile to JS.
[ci skip]
issue #2426:Add Drawprimitives.lua and Drawprimitives lua test sample
issue #2426:Modify tab and spaces
issue #2426:Modify coding style
issue #2426:Modify tab and spaces
Adding popSceneBack() function to Director

This function deletes the running scene and returns the actual scene
back to the caller. This way, we can simply use it to perform a
transition animation, like this:

    Director::sharedDirector()->replaceScene(
            TransitionSlideInL::create(0.5,
            Director::sharedDirector()->popSceneBack()));

Signed-off-by: Rodrigo Goncalves de Oliveira <rodrigo.goncalves@openbossa.org>