Examine source code of Quick Mind Map

{
  "manifest_version": 2,
  "name": "Quick Mind Map",
  "version": "1.3",
  "description": "Create quick and simple mind maps directly from your browser popup.",
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icons/logo_128.png"
  },
  "permissions": [
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{16f815ab-6716-4d34-8530-99ab1fc94418}"
    }
  }
}