Editor: Add missing lib.

editor/index.html

@@ -18,6 +18,7 @@
 		<script src="../examples/js/controls/EditorControls.js"></script>
 		<script src="../examples/js/controls/TransformControls.js"></script>
 
+		<script src="../examples/js/libs/chevrotain.min.js"></script>
 		<script src="../examples/js/libs/jszip.min.js"></script>
 		<script src="../examples/js/libs/inflate.min.js"></script> <!-- FBX -->