Add first Grand Prix for Spielberg

README.md

@@ -28,7 +28,7 @@ A repository of Formula 1™ circuits in [GeoJSON](http://geojson.org/) format.
 | Singapore | Marina Bay Street Circuit | 2008 |  | 5063m |103.859 | 1.291 | 
 | Sochi | Sochi Autodrom | 2014 | 2014 | 5848m | 39.960 | 43.407 |
 | Spa Francorchamps | Circuit de Spa-Francorchamps | 1925 |  | 7004m | 5.971 | 50.436 |
-| Spielberg | Red Bull Ring | 1969 |  | 4318m | 14.761 | 47.223 |
+| Spielberg | Red Bull Ring | 1969 | 1970 | 4318m | 14.761 | 47.223 |
 | Suzuka | Suzuka International Racing Course | 1962 |  | 5807m | 136.534 | 34.844 |
 
 ## Summary

f1-locations.geojson

@@ -341,6 +341,7 @@
                 "name": "Red Bull Ring",
                 "location": "Spielberg",
                 "opened": "1969",
+                "firstgp": "1970",
                 "length": "4318m",
                 "lon": "14.761",
                 "lat": "47.223",