Use trip id for vehicle id for commuter rail
Fix parsing of gtfs id
Use trip id for vehicle id in predictions
Don't request alerts from MBTA-realtime. We already get it from GTFS-realtime
Python script to generate a java class to parse a specific piece of JSON
Bug fixes
Remove extra parameter which isn't supposed to be there
Make methods for empty arrays
Since keys can appear in any order JsonReader isn't that useful here
Use classes instead of JsonObject for cleaner code
Merge branch 'master' into la