Getting started with Mapbox-gl
Adapted from the mapbox-gl example. Built with blockbuilder.org
NOTE: here we placed the labels on top of the GeoJSON layer. More info about how to do that is here
forked from enjalot's block: WWSD #3: Getting started Mapbox-gl
https://d3js.org/d3.v3.min.js
https://api.tiles.mapbox.com/mapbox-gl-js/v0.20.0/mapbox-gl.js