updated info for OpenCage API in geocoding section

README.md

@@ -422,7 +422,7 @@ API | Description | Auth | HTTPS | CORS |
 | [Mexico](https://github.com/IcaliaLabs/sepomex) | Mexico RESTful zip codes API | No | Yes | Unknown |
 | [One Map, Singapore](https://docs.onemap.sg/) | Singapore Land Authority REST API services for Singapore addresses | `apiKey` | Yes | Unknown |
 | [OnWater](https://onwater.io/) | Determine if a lat/lon is on water or land | No | Yes | Unknown |
-| [OpenCage](https://geocoder.opencagedata.com) | Forward and reverse geocoding using open data | No | Yes | Unknown |
+| [OpenCage](https://opencagedata.com) | Forward and reverse geocoding using open data | `apiKey` | Yes | Yes |
 | [OpenStreetMap](http://wiki.openstreetmap.org/wiki/API) | Navigation, geolocation and geographical data | `OAuth` | No | Unknown |
 | [PostcodeData.nl](http://api.postcodedata.nl/v1/postcode/?postcode=1211EP&streetnumber=60&ref=domeinnaam.nl&type=json) | Provide geolocation data based on postcode for Dutch addresses | No | No | Unknown |
 | [Postcodes.io](https://postcodes.io) | Postcode lookup & Geolocation for the UK | No | Yes | Yes |