By Denny Dyroff, Entertainment Editor, The Times Quinn Sullivan Massachusetts native Quinn Sullivan has found a home away from home at the Sellersville Theater (24 West Temple Avenue, Sellersville, 215-257-5808, www.st94.com). The young guitar ace will headline a show at the theatre on October 5. “I’ve played the Sellersville Theater a lot over the last six years,” said Sullivan, during a phone...