title: how do I install a theme using Jekyll 3.1 and octopress plugins?
body: <p>I am still using the default Octopress 3 theme, but would like to use Jekyll themes The instructions online, though, suggest that I fork a theme, change the <code>_config</code> file, and then add my content.</p>
  
  <p>It seems like, since the themes should just be <code>sass</code> and <code>_layout</code>, I should be able to install those files and have a new theme.<br>
  I haven't seen clearer examples or documentation on that.</p>
  
  <p>Posting here per the jekyll website.</p>