Actualización

web/assets/modernizr/feature-detects/userdata.js

@@ -0,0 +1,7 @@
+// test if IE userdata supported
+// msdn.microsoft.com/en-us/library/ms531424(v=vs.85).aspx
+// test by @stereobooster
+
+Modernizr.addTest('userdata', function(){
+  return !!document.createElement('div').addBehavior;
+});