Based on debian's manpage from Salvatore Bonaccorso:

e708a3a Sync manpage for crit to include short explanation for new subcommands
7dd571a Fix position for optional arguments in crit's manpage
017f8d9 Add minimal manpage for the crit

travis-ci: success for crit: added crit manpage
Signed-off-by: Adrian Reber <areber@redhat.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>