So I've built a Windows installer for my Electron app using <https://github.com/electron/grunt-electron-installer>. 

I'm not sure how to launch my app on system start up, like when the user reboots their computer. I suspect it's something I need to do on `--squirrel-install` but I can't find any documentation on how to do so.

Ideally I would provide a menu option for the user to enable/disable this behaviour.