Changed Health Class and added 3 boss subclasses.
Merge branch 'master' of https://github.com/msvb93/Creepy_Christmas

Conflicts:
	CreepyChristmas/Game.class
	CreepyChristmas/Game.java
	CreepyChristmas/Health.java
	CreepyChristmas/StartingRoom.class
	CreepyChristmas/package.bluej