Rudimentary API starts

Beginnings of an API for reading their XML and responding to GET /stop/#### with JSON
Add stop finding API

Add new responses to find nearest stops to a coord with /stop/ROUTE/DIR/LAT/LNG. Relocated predictions to /predictions/STOPID, duplicated at /times/STOPID until we settle on good verbs and nouns.
Merge pull request #3 from BusTicker/issue-1

Rudimentary API that directly accesses BusTime (no caching with postgres yet)