Add permalink example

examples/permalink.html

@@ -0,0 +1,19 @@
+---
+template: example.html
+title: Permalink example
+shortdesc: Example on how to create permalinks.
+docs: >
+  In this example the <a href="https://developer.mozilla.org/en-US/docs/Web/Guide/API/DOM/Manipulating_the_browser_history"
+  target="_blank">HTML 5 History API</a> is used to update the browser URL
+  with the current zoom-level, center and rotation when the map is moved.
+  Note that the History API is not supported in <a href="http://caniuse.com/#feat=history"
+  target="_blank">all browsers</a>, one might consider to use a <a
+  href="https://github.com/Modernizr/Modernizr/wiki/HTML5-Cross-Browser-Polyfills#html5-history-api-pushstate-replacestate-popstate"
+  target="_blank">a polyfill</a>.
+tags: "permalink, openstreetmap, history"
+---
+<div class="row-fluid">
+  <div class="span12">
+    <div id="map" class="map"></div>
+  </div>
+</div>