Tweak storage logging statement

// FREEBIE

js/storage.js

@@ -26,7 +26,7 @@
                 throw new Error("Tried to store undefined");
             }
             if (!ready) {
-                console.log('Called storage.put before storage is ready');
+                console.log('Called storage.put before storage is ready. key:', key);
             }
             var item = items.add({id: key, value: value}, {merge: true});
             item.save();