Description:
    Generates a new job. Pass the job name, either CamelCased or
    under_scored, with or without the job postfix.

Examples:
    `bin/rails generate job checkout`

      Creates the following files:

        Job:   app/jobs/checkout_job.rb
        Test:  test/jobs/checkout_job_test.rb

    `bin/rails generate job send_sms --queue=sms`

      Creates a job and test with a custom sms queue.

    `bin/rails generate job process_payment --parent=payment_job`

      Creates a job and test with a `PaymentJob` parent class.