Added the ability to specify a className in the json which will be applied to the token

Author: Dan Brooke

src/jquery.tokeninput.js

@@ -598,7 +598,7 @@ $.TokenList = function (input, url_or_data, settings) {
         var readonly = item.readonly === true ? true : false;
 
         if(readonly) $this_token.addClass($(input).data("settings").classes.tokenReadOnly);
-
+        if (item.className) $this_token.addClass(item.className);
         $this_token.addClass($(input).data("settings").classes.token).insertBefore(input_token);
 
         // The 'delete token' button