Examine source code of xkcd enhancements

{
  "manifest_version": 2,
  "name": "xkcd enhancer",
  "version": "1.1resigned1",
  "description": "Enhances your xkcd browsing experience.",
  "permissions": [
    "activeTab"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://xkcd.com/*"
      ],
      "js": [
        "enhance.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{ea95b626-0190-4cc0-ac41-c4db50144146}"
    }
  }
}