↑ uptime segment

![uptime](https://cloud.githubusercontent.com/assets/227395/2760766/c3bed084-c9bf-11e3-98ec-c4d9343f1b9c.png)

I've been using this segment on remote sessions so I know my VPNs uptime.  Am I the only one who likes to see the server uptime all the time? :see_no_evil: