Examine source code of dofus-map-more

{
  "manifest_version": 2,
  "name": "dofus-map-more",
  "version": "1.0.1",
  "description": "On dofus-map.com, when the user clicks on the map, generate a game command and copy it to clipboard.",
  "permissions": [],
  "content_scripts": [
    {
      "matches": [
        "*://*.dofus-map.com/*"
      ],
      "js": [
        "contentScript.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{4a5e69aa-6578-48b5-8c8d-c6331a6f6bc6}"
    }
  }
}