Adding links to apps

README.md

@@ -14,6 +14,12 @@ with GitLab Single-Sign-On.
 - [GitLab Mattermost Discussion and Troubleshooting Forum](https://forum.mattermost.org/t/the-gitlab-mattermost-troubleshooting-forum/134)
 - [Mattermost Documentation](http://docs.mattermost.com/)
+### Get the Apps!
+
+[Download iOS, Android, Windows, Mac and Linux apps for GitLab Mattermost](https://about.mattermost.com/downloads/), offering single-sign-on to Mattermost with your GitLab account. 
+
+![Android App](https://gitlab.com/gitlab-org/gitlab-mattermost/raw/master/20160316_gitlab_android_app.png)
+
 ### GitLab Mattermost features include: 
 #### Messaging and File Sharing