Rails, using whenever gem in development

Sorry quick question here from a relative Rails newbie. I'm trying to use the Whenever gem to schedule a number of rake tasks. I can't for the life of me get it to actually begin running the cron jobs on my development machine. Judging from other stackoverflow threads, it appears I should add this: set :environment, "development" to my schedule.rb file. But then what? And then how do I stop the cr

[ddddonuts]

“whenever --update-crontab --set environment='development'”