Examine source code of Spooky Tools

{
  "manifest_version": 2,
  "name": "Spooky Tools",
  "version": "1.0",
  "description": "Inject spooky tools into the current site when clicked.",
  "browser_action": {
    "default_icon": "icon.png",
    "default_title": "Spooky Tools"
  },
  "permissions": [
    "activeTab"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{7ff17d39-a535-4b79-901b-d76bdb314b93}"
    }
  }
}