use ngrok, update zuul version, test msedge

Author: calvinmetcalf

.zuul.yml

@@ -1,4 +1,5 @@
 ui: mocha-qunit
+tunnel: ngrok
 browsers:
   - name: chrome
     version: latest
@@ -8,3 +9,5 @@ browsers:
     version: latest
   - name: ie
     version: 9..latest
+  - name: microsoftedge
+    version: latest

package.json

@@ -15,8 +15,9 @@
     "util": "0.10.3"
   },
   "devDependencies": {
-    "zuul": "~3.9.0",
-    "mocha": "~1.21.4"
+    "mocha": "~1.21.4",
+    "zuul": "~3.10.0",
+    "zuul-ngrok": "^4.0.0"
   },
   "license": "MIT",
   "scripts": {