Create topic GeoJSON

Author: shaedrich

topics/geojson/index.md

@@ -0,0 +1,13 @@
+---
+display_name: GeoJSON
+short_description: GeoJSON is a JSON-based open standard file format for representation of geographical data
+topic: geojson
+related: json, osm, qgis, gis, topojson, citygml, geospatial,  computational-geometry
+released: August 2016
+created_by: Geographic JSON working group
+url: https://geojson.org/
+wikipedia_url: https://en.wikipedia.org/wiki/GeoJSON
+aliases: geojsonl, geo-json, rfc-7946
+---
+**Geojson** is a open standard file format for representation of geographical data which uses the [JavaScript Object Notation](https://github.com/topics/json). 
+