updated extensions description and documentation

EXTENSIONS.md

@@ -26,4 +26,33 @@ When this extension is included a map is automatically initialized on a containe
 
 This extension packaged together with the plugin enables *HTML developers* to insert a map in their pages without having to write a single line of JavaScript.
 
-
+###routing extension
+
+When this extension is include it is possible to add routes to the map by simply doing the following:
+
+`$('.selector').jHERE('route', from, to, routeOptions);`
+
+`from` and `to` can be objects of type
+
+`{latitude: -43, longitude: 55}`
+
+or an array
+
+`[-43, 55]`
+
+`routeOptions` is optional and can be an object of type
+
+	{
+	  marker: {},
+	  type: 'shortest',       //can be shortest, fastest, fastestNow, directDrive, scenic
+	  transportMode: 'car',   //can be car, pedestrian, publicTransport, truck
+	  options: '',            //can be avoidTollroad, avoidMotorway, avoidBoatFerry,
+	                          //avoidRailFerry, avoidPublicTransport, avoidTunnel,
+	                          //avoidDirtRoad, avoidPark, preferHOVLane, avoidStairs
+	  trafficMode: 'default', //can be enabled, disabled, default
+	  width: 4,               //width in px of the route drawn on the map
+	  color: '#ff6347'        //color of the route drawn on the map
+	}
+
+`marker` is an object containing the same options used for
+`$('.selector').jHERE('marker')`. Options apply to both start and destionation markers.

src/extensions/route.js

@@ -41,7 +41,7 @@
     //}</code></pre>
     //
     //`marker` is an object containing the same options used for
-    //`$('.selector').jHERE('marker'). Options apply to both start and destionation markers.
+    //`$('.selector').jHERE('marker')`. Options apply to both start and destionation markers.
     route = function(from, to, options){
         var router, wp, done;
         _ns = _ns || nokia.maps;

src/jhere.js

@@ -471,6 +471,25 @@
 
     /*Open up prototype for extensions*/
     $[plugin] = {};
+
+    //###Extend jHERE
+    //jHERE can be easily extended with additional features. Some example of
+    //extensions are located [here](https://github.com/mmarcon/jhere/blob/master/EXTENSIONS.md).
+    //An extension should be implemented within a self-invoking function.
+    //Add the function(s)
+    //that will be called via
+    //
+    //`$('.selector').jHERE('myextension', param1, param2);`
+    //
+    //as follows:
+    //
+    //<pre><code class="dark">$.jHERE.extend('myextension', function(param1, param2){
+    //  //this is the plugin object
+    //  //this.element is the DOM element
+    //  //this.map is the JSLA map
+    //});</code></pre>
+    //
+    //A good example of extension is the [routing extension](https://github.com/mmarcon/jhere/blob/master/src/extensions/route.js).
     $[plugin].extend = function(name, fn){
         if (typeof name === 'string' && isFunction(fn)) {
             H[name] = fn;