updated isKey to isLabel

Author: Bars92

lib/leaf.js

@@ -196,9 +196,9 @@ var Leaf = React.createClass({
             expanded: !this.state.expanded
         });
     },
-    _onClick: function(data, isKey, e) {
+    _onClick: function(data, isLabel, e) {
         this.toggle();
-        this.props.onClick(data, isKey);
+        this.props.onClick(data, isLabel);
 
         e.stopPropagation();
     },