Added PowerUp manager
Merge
Small add
Merge
PowerUpManager Update + Draw added
Added PowerUpManager in system

Also fixed so Shutdown will get called
Merge
Shutdown
Merge remote-tracking branch 'origin/master' into Power-ups

Conflicts:
	BO360/BO360/BOSystem.cpp
	BO360/BO360/BOSystem.h
Merge skit
Merge remote-tracking branch 'origin/master' into Power-ups
Merge remote-tracking branch 'origin/master' into Power-ups
Publisher / subscriber pattern added for PowerUps

BOPUSubscriber added for use in the pub/sub pattern. All power-ups also
have  a activate and deactivate where they will call the publisher to
call all subscribers that they have been activated
moved include

moved an include from powerUp to shield
AddPowerUp added
Merge remote-tracking branch 'origin/master' into Power-ups
Merge conflict fixed
Merge remote-tracking branch 'origin/master' into Ljud