xml stuff

i added an xml config file for the swf. i also created an abstract
screen so xml can be passed to the screen easily
Merge branch 'master' of https://github.com/theKristi/GameDev_spring14

Conflicts:
	TombRacer/bin/TombRacer.swf
	TombRacer/obj/TombRacerConfig.old
	TombRacer/obj/TombRacerConfig.xml