sirubo, readme, Makefile: clean codebase, change opts
readme: update as markdown, include gif demo
sirubo, readme: use words as args
readme: clarify motive and name origin
makefile: use var to reference conf, detect dirs
makefile: account for config directory creation
readme: clarify description
sirubo.conf: add to contrib
makefile: account for readme and openbsd uninstall
readme: add table of contents
readme: switch openbsd and linux in requirements
readme: add files section, revise others
sirubo: remove name from systemd service desc
makefile: account for deletion of backup ruleset
sirubo, readme: change args to dashes + letters
readme: change synopsis, add desc and motive
readme: rewrite in plain text from html
readme: add software synopsis