Adjusted from Jens Erat from
https://faq.i3wm.org/question/125/how-to-change-the-systems-volume.1.html
According to a comment this only works when something is playing, but I
think that is the only case when I need volume keys and is improvement
over it stopping working with volume devices changing. The proposed
cutting running again resulted to three devices being listed and thus
doesn't work.
I also have the volumeicon which I can use to adjust volume if I really
need to while there is nothing playing.
* remove some comments
* add Microsoft Corp. Wired Keyboard 600 (model 1576) keybinds for keys
I recognised and may use. Closes#98
* added keyboard layout setting to autostart
* set wallpaper to solid black
