chore(package): update express to version 4.14.0 (#2079)

https://greenkeeper.io/

Author: greenkeeperio-bot

package.json

@@ -25,7 +25,7 @@
     "colors": "1.1.2",
     "commander": "2.9.0",
     "deepcopy": "0.6.3",
-    "express": "4.13.4",
+    "express": "4.14.0",
     "intersect": "1.0.1",
     "lodash": "4.12.0",
     "lru-cache": "4.0.1",