[Suggestion] Option for daemonizing

[phantomcraft]

I believe it would be very useful when running dnscrypt-proxy from shell scripts.

Here I have to use daemonize tool in my scripts when sending dnscrypt-proxy to background: https://github.com/bmc/daemonize

[jedisct1]

There used to be an option for it. However, daemonization is a complicated and uncommon thing in Go applications.

Existing libraries were found to be unreliable on non-Linux systems, so the feature was eventually removed.

-service install / -service start achieve the same thing, except that it persists on reboot and works on most platforms.