Examine source code of Remind Me

{
  "manifest_version": 2,
  "name": "RemindMe",
  "version": "1.0",
  "description": "A simple reminder add-on that helps you remember important tasks by notifying you at the specified times.",
  "permissions": [
    "storage"
  ],
  "icons": {
    "48": "icon.png"
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f1a5bca2-f5ce-4bbe-8557-7d1413533882}"
    }
  }
}