Examine source code of Quote of the Day

{
  "manifest_version": 2,
  "name": "Quote of the Day",
  "version": "1.0",
  "description": "Get inspired every day with a random motivational quote in your browser popup.",
  "icons": {
    "48": "quote_icon.png"
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "Quote of the Day"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{4fe5493c-675a-41c7-a7ec-6783efd6fba0}"
    }
  }
}