Add support for `--deb-default FILEPATH` and `--deb-upstart FILEPATH`
Add support for `--deb-default FILEPATH` and `--deb-upstart FILEPATH`

http://manpages.ubuntu.com/manpages/lucid/man1/dh_installinit.1.html

djhaskin987/fpm,djhaskin987/fpm,djhaskin987/fpm,djhaskin987/fpm