Below is a Github Gist with a map comprised of GeoJSON data, along with the bash command that was used to create it.
Github automatically generates maps for GeoJSON files in Gists and repositories. This is well documented at the following article: https://help.github.com/articles/mapping-geojson-files-on-github
The map below pulls data from eBird API, transforms the data structure into GeoJSON format using jq, and then POSTs to a Github Gist.