index.js in jstree-rails-0.0.4

- old
+ new

@@ -11,5 +11,6 @@
 //= require jstree/jstree.state.js
 //= require jstree/jstree.themes.js
 //= require jstree/jstree.ui.js
 //= require jstree/jstree.unique.js
 //= require jstree/jstree.xml.js
+//= require jstree/jstree.helpers.js