Coughlin says he’ll look into cold-tub incident

The league won’t be doing anything about it.  But the head coach possibly will. Giants coach Tom Coughlin said Sunday that he plans to investigate the videotaped incident that culminated in defensive end Jason Pierre-Paul dumping cornerback Prince Amukamara into a cold tub, followed by Amukamara emerging with a not-so-thrilled look on his face and…