Add Julius to commercial support section

At least for the moment...

content/community.html

@@ -44,12 +44,13 @@ title: Community
 
     <h1>Commercial support</h1>
     <p>
-      This is a list of third-party companies which provide support or
+      This is a list of third-party companies and individuals who provide support or
       consulting services for Prometheus. Prometheus is an independent open source
       project which does not endorse any company.
     </p>
     <ul>
       <li><a href="http://www.robustperception.io">Robust Perception</a></li>
+      <li><a href="http://juliusv.com">Julius Volz</a> (independent contractor)</li>
     </ul>
 
     <h1>Acknowledgements</h1>