Mention file target locations in the README

[emk2203]

It would be helpful to mention where the files from the release archive are meant to go, even if just as example.

/usr/local/bin/dysk
/usr/local/share/man/man1/dysk.1
/usr/local/share/bash-completion/completions/_dysk
/usr/local/share/bash-completion/completions/dysk.bash
/usr/local/share/bash-completion/completions/dysk.elv
/usr/local/share/bash-completion/completions/dysk.fish

are the places for my install, the man and bash-completion paths were not immediately obvious.

[Canop]

Good idea. This should probably be added to https://dystroy.org/rhit/install/