title: R Markdown: Putting an image in the top right hand corner of HTML and moving title down
body: <p>I would like to put a company logo image in the top right hand side of my R markdown report, and then move the title down, say 3 or 4 cm lower than the default position.  The idea being that it looks like company letterhead.  </p>
  
  <p>Could anyone suggest how I could code this in my .Rmd file?  </p>
  
  <p>Thanks for any help!</p>