title: Is there a naming convention for git repositories?
body: <p>For example, I have a RESTful service called Purchase Service. Should I name my repository:</p>
  
  <ol>
  <li><code>purchaserestservice</code></li>
  <li><code>purchase-rest-service</code></li>
  <li><code>purchase_rest_service</code></li>
  <li>or something else?</li>
  </ol>
  
  <p>What's the convention? How about in Github? Should public repositories follow some standard?</p>