Examine source code of Quran Station

{
  "manifest_version": 2,
  "name": "Quran Station",
  "description": "Small extension that gives you access to over 100 stations to help you listen to the Quran from your favorite reciters easily",
  "version": "2.0.2",
  "icons": {
    "128": "icon.png"
  },
  "permissions": [
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{31526c8a-113c-40b8-98be-40b80cd073b7}"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_popup": "popup.html"
  }
}