chore(package): update jwt-simple to version 0.5.0

https://greenkeeper.io/

Author: greenkeeperio-bot

package.json

@@ -43,7 +43,7 @@
   "dependencies": {
     "async": "~1.5.2",
     "deep-extend": "^0.4.1",
-    "jwt-simple": "~0.4.0",
+    "jwt-simple": "~0.5.0",
     "memcached": "~2.2.2",
     "moment": "~2.14.1",
     "njwt": "^0.3.1",