Fix shutdown.sh

[oliveiraev]

Parameters for gnome-session-quit was incorrect.

Changed to --power-off as of http://manpages.ubuntu.com/manpages/zesty/man1/gnome-session-quit.1.html and https://github.com/GNOME/gnome-session/blob/master/tools/gnome-session-quit.c

[hvmzx]

I see that you were active recently,

If you add Mutate to the auto start-up programs, it will launch and also will execute and show the bar every boot
Do you have any idea how to have Mutate activated on start-up without having that bar pop up?

[oliveiraev]

I see that you were active recently,

If you add Mutate to the auto start-up programs, it will launch and also will execute and show the bar every boot
Do you have any idea how to have Mutate activated on start-up without having that bar pop up?

sorry for taking too long to reply.

You can start mutate with the switch --hidden as of #57, #64 and #66