added mongoose to package.json

package.json

@@ -4,6 +4,7 @@
   "private": true,
   "dependencies": {
     "lodash": "4.17.4",
+    "mongoose": "4.9.0",
     "react": "15.4.2",
     "react-addons-css-transition-group": "15.4.2",
     "react-dom": "15.4.2",