added makefile for ex5
added makefile for ex5

ray-chew/appfs,FirstSanny/appfs,FirstSanny/appfs,appfs/appfs,appfs/appfs,FirstSanny/appfs,appfs/appfs,appfs/appfs,FirstSanny/appfs,FirstSanny/appfs,appfs/appfs,FirstSanny/appfs,FirstSanny/appfs,appfs/appfs,appfs/appfs