Upgrade marshal dependency to 0.4.0.

Author: clayzermk1

package.json

@@ -20,6 +20,6 @@
     "url": "git://github.com/instore/rails-cookie-parser.git"
   },
   "dependencies": {
-    "marshal": "0.2.3"
+    "marshal": "0.4.0"
   }
 }