Merge pull request #1490 from jvautrot/Add-Boston-MBTA-API

Adds Boston MBTA API to Transportation

README.md

@@ -907,6 +907,7 @@ API | Description | Auth | HTTPS | CORS |
 | [aviationstack](https://aviationstack.com/) | Real-time Flight Status & Global Aviation Data API | `OAuth` | Yes | Unknown |
 | [Bay Area Rapid Transit](http://api.bart.gov) | Stations and predicted arrivals for BART | `apiKey` | No | Unknown |
 | [BlaBlaCar](https://dev.blablacar.com) | Search car sharing trips | `apiKey` | Yes | Unknown |
+| [Boston MBTA Transit](https://www.mbta.com/developers/v3-api) | Stations and predicted arrivals for MBTA | `apiKey` | Yes | Unknown |
 | [Community Transit](https://github.com/transitland/transitland-datastore/blob/master/README.md#api-endpoints) | Transitland API | No | Yes | Unknown |
 | [GraphHopper](https://graphhopper.com/api/1/docs/) | A-to-B routing with turn-by-turn instructions | `apiKey` | Yes | Unknown |
 | [Icelandic APIs](http://docs.apis.is/) | Open APIs that deliver services in or regarding Iceland | No | Yes | Unknown |