--i Insecure, no ssl
--c CERT_DIR Default is /p/c/machine_specific/\$HOSTNAME/webservercerts
--h|--help Print help and exit
--r DocumentRoot
--- Subsequent arguments are never treated as options
+-i Insecure, no ssl
+-c CERT_DIR In priority: this arg, $ACME_TINY_WRAPPER_CERT_DIR,
+ $HOME/webservercerts, if the other options aren't set.
+-r DocumentRoot
+-h|--help Print help and exit