Fixed issue #44.

Author: killme2008

lib/av.js

@@ -4528,6 +4528,30 @@
       this._fetchWhenSave = enable;
     },
 
+   /**
+    * Returns the object's objectId.
+    * @return {String} the objectId.
+    */
+    getObjectId: function() {
+      return this.id;
+    },
+
+   /**
+    * Returns the object's createdAt attribute.
+    * @return {Date}
+    */
+    getCreatedAt: function() {
+      return this.createdAt || this.get('createdAt');
+    },
+
+   /**
+    * Returns the object's updatedAt attribute.
+    * @return {Date}
+    */
+    getUpdatedAt: function() {
+      return this.updatedAt || this.get('updatedAt');
+    },
+
     /**
      * Returns a JSON version of the object suitable for saving to AV.
      * @return {Object}