update readme

Author: dev-javascript

README.md

@@ -864,7 +864,7 @@ Return value : instance
 
 Parameters:
 
-- `event Name : String (can be either of of onSelect|onClose|onOpen|onInit|onChange|onDestroy)`
+- `event Name : String (can be either of onSelect|onClose|onOpen|onInit|onChange|onDestroy)`
 - `handler : function`
 
 **Example**
@@ -884,7 +884,7 @@ Return value : instance
 
 Parameters:
 
-- `event Name : String (can be either of of onSelect|onClose|onOpen|onInit|onChange|onDestroy)`
+- `event Name : String (can be either of onSelect|onClose|onOpen|onInit|onChange|onDestroy)`
 - `handler : function`
 
 **Example**
@@ -903,7 +903,7 @@ Return value : instance
 
 Parameters:
 
-- `event Name : String (can be either of of onSelect|onClose|onOpen|onInit|onChange|onDestroy)`
+- `event Name : String (can be either of onSelect|onClose|onOpen|onInit|onChange|onDestroy)`
 - `handler : function (A handler function previously attached for the event)`
 
 **Example**