Examine source code of Spon Unlock

{
  "manifest_version": 2,
  "name": "sponUnlock",
  "version": "2.1resigned1",
  "description": "Invalidates the AdBlock blocker on Spiegel Online",
  "icons": {
    "48": "icons/sponUnlock-48.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.spiegel.de/*"
      ],
      "js": [
        "sponUnlock.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{19f12586-9e26-43e8-968f-157292ad1818}"
    }
  }
}