Add wmts-capabilities example

examples/wmts-capabilities.js

@@ -0,0 +1,20 @@
+goog.require('ol.parser.ogc.WMTSCapabilities');
+
+var parser = new ol.parser.ogc.WMTSCapabilities(), result;
+var url = 'data/WMTSCapabilities.xml';
+
+var xhr = new XMLHttpRequest();
+xhr.open('GET', url, true);
+
+
+/**
+ * onload handler for the XHR request.
+ */
+xhr.onload = function() {
+  if (xhr.status == 200) {
+    result = parser.read(xhr.responseXML);
+    document.getElementById('log').innerHTML =
+        window.JSON.stringify(result, undefined, 2);
+  }
+};
+xhr.send();