Use fetch instead of $.ajax in JSTS example

examples/jsts.html

@@ -1,6 +1,6 @@
 ---
-layout: example.html
-title: JSTS Example
+layout: strapless.html
+title: JSTS Integration
 shortdesc: Example on how to use JSTS with OpenLayers 3.
 docs: >
   Example showing the integration of <a href="https://github.com/bjornharrtell/jsts">JSTS</a>
@@ -9,11 +9,5 @@ tags: "vector, jsts, buffer"
 resources:
   - https://cdn.rawgit.com/bjornharrtell/jsts/gh-pages/lib/0.16.0/javascript.util.min.js
   - https://cdn.rawgit.com/bjornharrtell/jsts/gh-pages/lib/0.16.0/jsts.min.js
-
-
 ---
-<div class="row-fluid">
-  <div class="span12">
-    <div id="map" class="map"></div>
-  </div>
-</div>
+<div id="map" class="map"></div>

examples/jsts.js

@@ -12,10 +12,11 @@ goog.require('ol.source.Vector');
 
 
 var source = new ol.source.Vector();
-$.ajax('data/geojson/roads-seoul.geojson').then(function(response) {
+fetch('data/geojson/roads-seoul.geojson').then(function(response) {
+  return response.json();
+}).then(function(json) {
   var format = new ol.format.GeoJSON();
-  var features = format.readFeatures(response,
-      {featureProjection: 'EPSG:3857'});
+  var features = format.readFeatures(json, {featureProjection: 'EPSG:3857'});
 
   var parser = new jsts.io.olParser();