Updated documentation.

Author: dnasir

README.md

@@ -189,11 +189,21 @@ Sets the default dropdown item on initialisation. The value can be a the value o
 
     onChange: function(event, value, requiredValues, requirementsMet) { }
 
-<sub>Added: 1.0.0</sub>
+<sub>Added: 1.0.0</sub><br/>
 <sub>Updated: 1.2.4</sub>
 
 Event handler triggered when the dropdown value is changed. The event handler is passed the event object, the value of the current dropdown, and an object containing the values of all the required dropdowns. A boolean value indicating whether the requirements for a particular dropdown have been met or not is also passed.
 
+## Methods
+
+#### destroy
+
+Destroys the instance and reverts everything back to their initial state.
+
+    $('#dropdown').cascadingDropdown('destroy');
+
+<sub>Added: 1.2.7</sub>
+
 ## Server-side implementation
 
 By default, this plugin expects the web service to return a JSON object containing an array of objects with properties 'label' and 'value'. The web service may also include a 'selected' property for an object within an array to indicate that that particular object is to be the selected item.