support OS X and crontab in --daemonize

[rpanah]

OS X does not have /etc/cron.daily and /etc/cron.hourly folders. We need to use crontab (or whatever is suitable) in that case.

[rpanah]

We can (should) use launchd on Mac OS. More information here.

[MagnumOpus21]

@rpanah I may be able to help you with this. What do you specifically need for the macOS's launchd?

[rpanah]

@MagnumOpus21 Hey Siva. This is a 2-year-old issue and I'm not sure if it is a priority anymore, especially given that I don't have as active of a role on this project anymore. You might want to check with @arianniaki to see if they need your help on this or anything else.