title: How do I properly install and run Thin?
body: <p>How does one install and run Thin? According to the <a href="http://code.macournoyer.com/thin/" rel="nofollow noreferrer">official page</a>, I can start it with <code>bundle exec thin start</code>, but no dice. Instead I get <code>Could not locate Gemfile</code>. If I restart Terminal and run <code>gem install thin</code> again, it seems to install it again as if it weren't properly installed the first time.</p>
  
  <p><img src="https://i.stack.imgur.com/vnnEc.png" alt="Sceeenshot of Terminal output"></p>