function get gps data from api, create geojson, add geojson to map and add data to sidebar

function getGeoJSON(data) {
    // add geojson to map and add sidebar
    var gps = L.geoJson(data, {
      pointToLayer: function(feature, latlng) {
        return L.circleMarker(latlng, geojsonMarkerOptions);
      },
      onEachFeature: onEachFeature
    })
    .addTo(map);