[chore] Bump zuul to 3.11.0 & zuul-ngrok to 4.0.0 (#70)

Author: darrachequesne

package.json

@@ -7,8 +7,8 @@
   "devDependencies": {
     "expect.js": "0.3.1",
     "mocha": "2.2.5",
-    "zuul": "3.10.1",
-    "zuul-ngrok": "3.2.0"
+    "zuul": "3.11.0",
+    "zuul-ngrok": "4.0.0"
   },
   "dependencies": {
     "after": "0.8.1",