Examine source code of Ready Player One Remover

{
  "manifest_version": 2,
  "name": "Ready Player One Remover",
  "description": "An extension that changes all mention of the book Ready Player One, its author, and its central protagonists to be much more fun.",
  "version": "1.2resigned1",
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{61926731-4f12-46bf-94ab-e31eeaa04cf7}"
    }
  }
}