Examine source code of Current Temprature

{
  "name": "Current Temprature",
  "version": "1.0.0",
  "desccriptions": "Current Temprature",
  "manifest_version": 2,
  "browser_action": {
    "default_popup": "index.html",
    "default_icon": "icon.jpg"
  },
  "permissions": [
    "activeTab"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{a8f337e5-5f93-4c16-83bb-a1d3ea8a211c}"
    }
  }
}