title: R Markdown Presentation - Add Footnotes
body: <p>Here is my first couple of pages of my R Markdown presentation that I am trying to create.</p>
  
  <pre><code>Statistics 101
  ========================================================
  author: ManiL
  date: June 17, 2015
  
  Review of Statistical Concepts
  ========================================================
  
  Definition
  
  - Statistics is the science of data collection, analysis and interpretation of results.
  ====================================================
  </code></pre>
  
  <p>I would like to add a footnote that will appear on every page.  I see suggestions online but would like to see an actual example. </p>