title: Print xaringan slides with presenter notes
body: <p>Is it possible to print xaringan slides with the presenter notes?</p>
  <p>I know I can print the slides using these methods (<a href="https://github.com/yihui/xaringan/wiki/Export-Slides-to-PDF" rel="noreferrer">https://github.com/yihui/xaringan/wiki/Export-Slides-to-PDF</a>). But I can't get a print out with the presenter notes.</p>
  <p>Thanks!</p>