public static void main(String[] args) {
		EntityWorld world = new EntityWorld();
		TestSystem test = new TestSystem(world);
		BlahSystem blah = new BlahSystem(world);
		test.interestedIn(Health.class);
		world.addSystem(test);
		world.addSystem(blah);
		
		
		world.create().add(new Health(0));
		world.create().add(new Health(1));
		world.update();

		//System.out.println("\n" + world);
	}