Add list of providers of commercial support

content/community.html

@@ -30,6 +30,15 @@ title: Community
     more elaborate or controversial changes, please discuss them on the mailing
     list before sending a pull request.
   </p>
+  <h1>Commercial support</h1>
+  <p>
+    This is a list of third-party companies which 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>
+  </ul>
   <h1>Acknowledgements</h1>
   <p>
     Prometheus was initially started by