Change indentation style of ‘case’ block
Don’t try to support running “zsh fortuner2” etc. Update docs
Use desktop-file-install only if it’s available
Revert "Rename desktop file to com.github.jnumm.fortuner2.desktop as recommended in spec"

This reverts commit ff21146471b25a4795fdeef722eab86e0d643d98.

Conflicts:
	Makefile