Flixel Base Project Added.

This commit adds the base of the Flixel-GDX, the game engine library into
the project. No changes have been made from the deafult project setup
provded by the Flixel-GDX project setup GUI aside from minor changes to
project configs so to stop compile errors and allow the project to run in the
Android Emulator.

Signed-off-by: Alex Colson <guythundar@gmail.com>