update moment.js version: ^2.21.0

Author: dwind

package-lock.json

@@ -18,7 +18,7 @@
     "fast-csv": "^2.4.0",
     "hasha": "^2.2.0",
     "lodash": "^4.17.4",
-    "moment": "^2.17.1",
+    "moment": "^2.21.0",
     "mustache": "^2.3.0",
     "opn": "^5.1.0",
     "qs": "^6.4.0",