added Geocoding as section and OpenCage as API

README.md

@@ -69,6 +69,12 @@ A collective list of JSON APIs for use in web development.
 | Comic Vine | Comics | No | [Go!](http://comicvine.gamespot.com/api/documentation) |
 | Steam | Steam Client API | Yes | [Go!] (https://developer.valvesoftware.com/wiki/Steam_Web_API) |
 
+### Geocoding
+
+| API | Description | OAuth |Link |
+|---|---|---|---|
+| OpenCage | Forward and reverse geocoding using open data | No | [Go!](https://geocoder.opencagedata.com) |
+
 ### Media
 
 | API | Description | OAuth |Link |