Examine source code of Random Article Generator

{
  "manifest_version": 2,
  "name": "Random Article Generator",
  "version": "1.0",
  "description": "Opens a random article from a user-configured list of favorite websites.",
  "permissions": [
    "storage",
    "tabs"
  ],
  "browser_action": {
    "default_title": "Open Random Article",
    "default_icon": "icon.png"
  },
  "icons": {
    "48": "icon.png"
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": false
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{24b12078-fbef-4d62-b786-1a9d43edd58f}"
    }
  }
}