added relativity htop screenshot

_posts/2017-03-22-gitlab_server_upgrade.md

@@ -12,3 +12,5 @@ Also [GitLab 9.0](https://about.gitlab.com/2017/03/22/gitlab-9-0-released/) was
 And as always, let [me](mailto:david@socialnerds.org) know if you have any troubles!
 
 Enjoy!
+
+[relativity_htop](/images/relativity_htop.png)