There's a lot more to the bowling business these days than some funny-looking shoes, a collection of bowling balls and a joint selling burgers and beers off to the side.Like XBowling, for example.The smart-phone app developed by Sports Challenge Network of Dacula, Ga., is expected to draw big interest from the 4,000 bowling center proprietors trolling the exhibit hall at the annual International Bowl Expo in Reno next week.XBowling allows bowlers to compete against themselves or against other XBowlers in real-time or on-demand contests.The bowling industry sees the application as an important tool to draw in the next generation of …