Remove testing files

Author: Victoria

package.json

@@ -6,7 +6,6 @@
   "scripts": {
     "lint": "standard --fix ./source/**/*.js || true",
     "start": "webpack-cli",
-    "test": "mocha",
     "build": "webpack",
     "dev": "webpack --mode development"
   },
@@ -21,10 +20,11 @@
     "url": "https://github.com/cloudflare-apps/example-app/issues"
   },
   "homepage": "https://github.com/cloudflare-apps/example-app#readme",
-  "dependencies": {},
+  "dependencies": {
+    "mock-browser": "^0.92.14"
+  },
   "devDependencies": {
     "@cloudflare-apps/environment": "^0.0.2",
-    "mocha": "^5.1.1",
     "standard": "^9.0.2",
     "webpack": "^4.6.0",
     "webpack-cli": "^2.0.14"

source/app.js

@@ -20,6 +20,7 @@
   window.INSTALL_SCOPE = {
     setOptions: function setOptions (nextOptions) {
       options = nextOptions
+      
       updateElement()
     }
   }