g_template.js', add in your access token, and save the file as 'config.js'.");
        
        mapboxgl.accessToken = config.accessToken;
        var map = new mapboxgl.Map({
          container: 'map',
          style: 'mapbox://styles/mapbox/streets-v8',
          center: [-122.4131, 37.7743],
          zoom: 14,
          pitch: 60
        });

        map.on('style.load', function() {

            map.addLayer({
                id: 'custom_layer',
                type: 'custom',
                onAdd: 