I think the way Easton33 plays it is quite simple. "Follow" the ball is how they are taught to play regular hits. Having the SS run over to 2B when the bunt is hit on the left side of the field is actually less simple.
We actually changed our coverage scheme tonight after several of our players and coaches went to a college camp last weekend. With a runner on 1B and the batter bunts, 3B, P and 1B crash the bunt, 2B covers the bag at 1st, SS covers the bag at 2nd, C sprints to covers the bag at 3B, 1B covers home, RF backs up the throw to 1B, LF back up a throw to 3B and CF backs up a throw to 2B.