MagicMirror/installers/pm2_MagicMirror.json

{
  "apps" : [{
    "name"        : "MagicMirror",
    "script"      : "/home/pi/MagicMirror/installers/mm.sh",
    "watch"       : ["/home/pi/MagicMirror/config/config.js"]
  }]
}