Examine source code of Gameloop

{
  "manifest_version": 2,
  "name": "Gameloop",
  "description": "Recommends the user different games based on the selected Genre",
  "version": "1.0",
  "icons": {
    "32": "icons/icon32x32.png",
    "64": "icons/icon64x64.png",
    "128": "icons/icon128x128.png"
  },
  "permissions": [
    "contextMenus",
    "notifications"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": "icons/icon64x64.png",
    "default_title": "Gameloop",
    "default_popup": "index.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c9bc181c-9c3d-469a-b802-695883c812f8}"
    }
  }
}