Add is_official field to GTFS JSON

Author: emmambd

catalogs/sources/gtfs/schedule/us-ohio-greater-dayton-regional-transit-authority-greater-dayton-rta-gtfs-403.json

@@ -2,6 +2,7 @@
     "mdb_source_id": 403,
     "data_type": "gtfs",
     "provider": "Greater Dayton Regional Transit Authority (Greater Dayton RTA)",
+    "is_official": "True",
     "location": {
         "country_code": "US",
         "subdivision_name": "Ohio",
@@ -18,4 +19,4 @@
         "direct_download": "http://proc.greaterdaytonrta.org/gtfs/google_transit.zip",
         "latest": "https://storage.googleapis.com/storage/v1/b/mdb-latest/o/us-ohio-greater-dayton-regional-transit-authority-greater-dayton-rta-gtfs-403.zip?alt=media"
     }
-}
+}