depends on xsel on Linux, but the docs don't mention it

[lanyeeee]

I install skonsole in Ubuntu
run skonsole commit, after thinking, I got error like

Unhandled exception: System.Exception: Could not execute process. Command line: bash -c "cat /tmp/tmpdAJtw0.tmp | xsel -i --clipboard ".
Output: 

Error: bash: L� 1: xsel: *g~b0R}

I fix it by install xsel, but the docs don't mention skonsole depends on it
so maybe you should mention it