Examine source code of Clikr

{
  "name": "Clikr",
  "version": "1.7.1.2",
  "manifest_version": 2,
  "description": "Turn your phone into a wireless laser pointer and clicker for browser-based slide decks. Free, with one-time-payment Pro features.",
  "author": "Mattias Wallander <mattias@mawal.se>",
  "browser_specific_settings": {
    "gecko": {
      "id": "webpresenter@mawal.se",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": [
          "websiteContent"
        ]
      }
    }
  },
  "permissions": [
    "activeTab",
    "alarms",
    "storage",
    "http://*/*",
    "https://*/*"
  ],
  "background": {
    "scripts": [
      "/dist/browser-polyfill.js",
      "/dist/background/index.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_title": "Clikr",
    "default_icon": "/dist/images/icon-disabled-light.png",
    "default_popup": "/dist/popup/index.html"
  },
  "web_accessible_resources": [
    "/dist/controls/index.js",
    "/dist/images/icon-disabled-dark.png",
    "/dist/images/icon-enabled-dark.png",
    "/dist/images/icon-disabled-light.png",
    "/dist/images/icon-enabled-light.png"
  ]
}