Update wmts-hidpi, add nicer-api-docs

nicer-api-docs/examples/scale-line.js

@@ -0,0 +1,22 @@
+var scaleLineControl = new ol.control.ScaleLine();
+
+var map = new ol.Map({
+  controls: ol.control.defaults().extend([
+    scaleLineControl
+  ]),
+  layers: [
+    new ol.layer.Tile({
+      source: new ol.source.OSM()
+    })
+  ],
+  renderer: exampleNS.getRendererFromQueryString(),
+  target: 'map',
+  view: new ol.View2D({
+    center: [0, 0],
+    zoom: 2
+  })
+});
+
+
+var unitsSelect = new ol.dom.Input(document.getElementById('units'));
+unitsSelect.bindTo('value', scaleLineControl, 'units');