Update underscore-db dependency

Author: typicode

package.json

@@ -24,7 +24,7 @@
     "request": "^2.72.0",
     "server-destroy": "^1.0.1",
     "shortid": "^2.2.6",
-    "underscore-db": "^0.12.0",
+    "underscore-db": "^0.12.1",
     "update-notifier": "^1.0.2",
     "yargs": "^6.0.0"
   },