title: Split the title onto multiple lines?
body: <p>In an R markdown document (html and presentations), is it possible to manually split the title onto multiple lines? I tried playing with pipes which produces orrendous output.</p>
  
  <pre><code>---
  title:  'A title I want to split on two lines'
  author: 
  date: 
  output:
    ioslides_presentation
  ---
  </code></pre>