Updated package.json to pull in the latest parse server 2.1.2

See https://github.com/ParsePlatform/parse-server/blob/master/CHANGELOG.md

package.json

@@ -12,7 +12,7 @@
     "express": "~4.2.x",
     "kerberos": "~0.0.x",
     "parse": "~1.6.12",
-    "parse-server": "~2.1"
+    "parse-server": "~2.1.2"
   },
   "scripts": {
     "start": "node index.js"