(Part of a series on Island business) Food trucks are extremely popular on Governors Island, which at this time has no permanent restaurants. The trucks have been a mainstay for more than five years, and of course, the island is home to the annual Vendy Awards, which this year will be held on September 12. Today there are more than a dozen food trucks on the island; some are under the @govislandfood Twitter handle. Other food trucks are on the island independently. Most are gathered around Liggett Hall (Building 400) nearby Liggett Terrace. We got the lowdown from Ben Goldberg, CEO of the Live Fast Group, about which trucks are…