While Metrobus users have been eagerly awaiting the official July re-launch of NextBus, DDOT and Mayor Adrian Fenty announced today that Circulator riders now have a mobile application, dubbed “Where’s My Bus?”, that allows smartphone users to track Circulator buses in real time. All you have to do is go to http://circulator.dc.gov/ from any mobile device (the url works in any browser, really), select the Circulator route and bus stop, and it’ll tell you…