Examine source code of Marmifree

{
  "manifest_version": 2,
  "name": "Marmicon",
  "version": "1.0.1",
  "description": "Supprime la fenêtre de cookie sur Marmiton",
  "icons": {
    "512": "icon/icon.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.marmiton.org/*"
      ],
      "js": [
        "marmicon.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{c9fafb5c-24c8-44ce-b4ce-886b683e33f9}"
    }
  }
}