Documentation: CronJob methods section, frequency

[vais]

https://github.com/jmettraux/rufus-scheduler#frequency-1

pry(main)> Rufus::Scheduler.parse('* * * * *').frequency
NoMethodError: undefined method `frequency' for #<Fugit::Cron:0x00007fbe4b063b80>

Maybe this is something that used to work in an older version?

[jmettraux]

Thanks for the question.

I updated the documentation and got rid of CronJob#frequency.

Closing this, but if you have suggestions, they are welcome.

Thanks again.