Description:
    Creates a migration to add the job queue table used by BackgrounDRb.
    Pass the migration name, either CamelCased or under_scored, as an argument.

Example:
    ./script/generate bdrb_migration CreateBackgroundrbQueue

    Assuming this is run at 09:00:15h on 12 September, 2008, this will create the
    CreateBackgroundrbQueue migration in:

        db/migrate/20080912090015_create_backgroundrb_queue.rb

