added destroy method

HISTORY.md

@@ -35,7 +35,7 @@ http://visjs.org
   strange behaviour in manipulation mode
 - Better cleanup after reconnecting edges in manipulation mode
 - Fixed recursion error with smooth edges that are connected to non-existent nodes
-
+- Added destroy method. 
 
 ## 2014-11-28, version 3.7.1
 

docs/network.html

@@ -2222,7 +2222,11 @@ var options = {
     <td>none</td>
     <td>Remove an event listener created before via function <code>on(event, callback)</code>. See section <a href="#Events">Events</a> for more information.</td>
   </tr>
-
+  <tr>
+    <td>destroy()</td>
+    <td>none</td>
+    <td>Remove all bindings and clean up after the Network.</td>
+  </tr>
   <tr>
     <td>redraw()</td>
     <td>none</td>

lib/network/Network.js

@@ -835,6 +835,21 @@ Network.prototype._createKeyBinds = function() {
   }
 };
 
+
+Network.prototype.destroy = function() {
+  // remove keybindings
+  this.keycharm.reset();
+
+  // clear hammer bindings
+  this.hammer.dispose();
+
+  // clear events
+  this.off();
+
+
+}
+
+
 /**
  * Get the pointer location from a touch location
  * @param {{pageX: Number, pageY: Number}} touch