Using @tmcw's csv2geojson to add points from a CSV to a Mapbox GL JS map.
forked from danswick's block: CSV on a GL map!
https://ajax.googleapis.com/ajax/libs/jquery/2.2.0/jquery.min.js
https://api.tiles.mapbox.com/mapbox-gl-js/v0.38.0/mapbox-gl.js