TripIt has released a universal update to its iOS travel organizer app adding native support for the iPad. TripIt for iOS is a companion app to the popular web service that allows travellers to easily organize and keep track of all details of their trip itineraries such as flights, hotel reservations, car rentals and more. Rather than simply translating the existing app onto the iPad, TripIt 2.5 has been custom built for the larger display, introducing…