Add objectfit and localstorage to browser features

.modernizr.json

@@ -7,6 +7,8 @@
   "feature-detects": [
     "test/css/displaytable",
     "test/css/flexbox",
-    "test/es5/specification"
+    "test/es5/specification",
+    "test/css/objectfit",
+    "test/storage/localstorage"
   ]
 }