Examine source code of Kerching Popup

{
  "version": "3.1",
  "manifest_version": 2,
  "name": "Kerching Popup",
  "icons": {
    "128": "image/logo.png"
  },
  "browser_action": {
    "default_icon": "image/logo.png",
    "default_title": "Kerching!",
    "default_popup": "popup.html"
  },
  "permissions": [
    "https://www.kerching.com.au/*",
    "tabs",
    "activeTab",
    "https://www.google.com/",
    "storage"
  ],
  "background": {
    "scripts": [
      "script/background.js"
    ]
  }
}