[js][jQuery] fixed .on arguments

.on() should allow .on( events [, selector ] [, data ], handler(eventObject) )
according to http://api.jquery.com/on/#on-events-selector-data-handlereventObject

This update fixes a Build failure http://try.haxe.org/#e4ea8
Test.hx:9: characters 27-32 : String should be Dynamic<js.JqEvent -> Void>
Test.hx:9: characters 27-32 : For function argument 'events

Here's a test: https://gist.github.com/theRemix/3b9bcff991e99de2a70d
This test will compile and run successfully after this update.

std/js/JQuery.hx

@@ -340,6 +340,7 @@ extern class JQuery implements ArrayAccess<Element> {
 
 	// JQuery 1.7+
 	@:overload(function(events:Dynamic<JqEvent->Void>):JQuery{})
+	@:overload(function(events : String, selector : String, callb : JqEvent -> Void ):JQuery{})
 	function on( events : String, callb : JqEvent -> Void ) : JQuery;
 
 	// queue