Yankees’ surprise hero can’t wait to make his playoff debut

It wasn’t always all smiles for Luke Voit. One week after being acquired by the Yankees, Voit had played more games with Triple-A Scranton-Wilkes Barre than he had in the official pinstripes. On Aug. 13, he was batting .188 (3-for-16, with five strikeouts) and sent down to spend another seven games in the minors. The…