Add scale line example

examples/scale-line.js

@@ -0,0 +1,29 @@
+goog.require('ol.Coordinate');
+goog.require('ol.Map');
+goog.require('ol.RendererHints');
+goog.require('ol.View2D');
+goog.require('ol.control.ScaleLine');
+goog.require('ol.control.ScaleLineUnits');
+goog.require('ol.control.defaults');
+goog.require('ol.layer.TileLayer');
+goog.require('ol.source.OpenStreetMap');
+
+
+var map = new ol.Map({
+  controls: ol.control.defaults({}, [
+    new ol.control.ScaleLine({
+      units: ol.control.ScaleLineUnits.IMPERIAL
+    })
+  ]),
+  layers: [
+    new ol.layer.TileLayer({
+      source: new ol.source.OpenStreetMap()
+    })
+  ],
+  renderers: ol.RendererHints.createFromQueryData(),
+  target: 'map',
+  view: new ol.View2D({
+    center: new ol.Coordinate(0, 0),
+    zoom: 2
+  })
+});