Add kerberos as a direct dependency

package.json

@@ -10,6 +10,7 @@
   "license": "MIT",
   "dependencies": {
     "express": "~4.2.x",
+    "kerberos": "~0.0.x",
     "parse": "~1.6.12",
     "parse-server": "~2.0.0"
   },