How to install a daemon with quickly

I'm building a project jsontrap that runs as a daemon.
I can get my daemon working but I'm having difficulty building a deb package for it.
I have an init command (/etc/init.d/jsontrap) that can start and stop the daemon. But when I look at a similar daemon package (sec_2.5.3-1+nmu1_all.deb) it includes links in /etc/rcd1.d, for example, that point at /etc/init.s/sec.

the sec package DEBIAN/postinst contains this

#!/bin/sh
set -e
# Automatically added by dh_installinit
if [ -x "/etc/init.d/sec" ]; then
 update-rc.d sec defaults >/dev/null
 if [ -x "`which invoke-rc.d 2>/dev/null`" ]; then
  invoke-rc.d sec start || exit $?
 else
  /etc/init.d/sec start || exit $?
 fi
fi
# End automatically added section

while the jsontrap package DEBIAN/postinst contains

#!/bin/sh
set -e
# Automatically added by dh_pysupport
if which update-python-modules >/dev/null 2>&1; then
 update-python-modules jsontrap.public
fi
# End automatically added section

I guess I need quickly package to call dh_installinit for my project. Does anyone know how to achieve this ?