Difference in forever and forever-monitor packages? Startup script?

Question

Node.js

In general, the question is, is there a difference between forever and forever-monitor, if so, what is it?
And with what script can I organize the autorun of a node.js application through forever-monitor?
I have the following script, how correct is it, can it be improved / supplemented (script for forever, installed with the -g switch):

#!/bin/bash
#
# Source function library.
. /etc/init.d/functions

NAME=main_project
SOURCE_DIR=/home/admin
SOURCE_FILE=index.js

user=node
pidfile=/home/admin/.forever/pids/$NAME.pid
logfile=/home/admin/.forever/sock/$NAME.log
#pidfile=/var/run/$NAME.pid
#logfile=/var/log/$NAME.log
forever_dir=/var/run/forever

node=node
forever=forever
sed=sed

export PATH=$PATH:/home/node/local/node/bin
export NODE_PATH=$NODE_PATH:/home/node/local/node/lib/node_modules

start() {
  echo "Starting $NAME node instance: "

  if [ "$foreverid" == "" ]; then
    # Create the log and pid files, making sure that
    # the target use has access to them
    touch $logfile
    chown $user $logfile

    touch $pidfile
    chown $user $pidfile

    # Launch the application
    daemon --user=root \
      $forever start -p $forever_dir --pidFile $pidfile -l $logfile \
      -a -d $SOURCE_DIR/$SOURCE_FILE
    RETVAL=$?
  else
    echo "Instance already running"
    RETVAL=0
  fi
}

stop() {
  echo -n "Shutting down $NAME node instance : "
  if [ "$foreverid" != "" ]; then
    $node $SOURCE_DIR/prepareForStop.js
    $forever stop -p $forever_dir $id
  else
    echo "Instance is not running";
  fi
  RETVAL=$?
}

if [ -f $pidfile ]; then
  read pid < $pidfile
else
  pid=""
fi

if [ "$pid" != "" ]; then
  # Gnarly sed usage to obtain the foreverid.
  sed1="/$pid\]/p"
  sed2="s/.*\[\([0-9]\+\)\].*\s$pid\.*/\1/g"
 foreverid=`$forever list -p $forever_dir | $sed -n $sed1 | $sed $sed2`
else
  foreverid=""
fi

case "$1" in
  start)
    start
    ;;
  stop)
    stop
    ;;
  status)
    status -p ${pidfile}
    ;;
  *)
    echo "Usage:  {start|stop|status}"
    exit 1
    ;;
esac
exit $RETVAL

Lies in etc/rc.d/init.d/main_project.sh