title: rake aborts, don't know how to build task 'jobs:work'
body: <p>I'm trying to get going on my first Ruby (v1.9.3p194) project.  I'm hosting on Heroku, and using Sinatra along with ActiveRecord.  I'm trying to integrate delayed_job into my project, and running into trouble getting rake to recognize jobs:work.  (Yes, I know delayed_job typically works with rails, but as I understand it can work without it.) </p>
  
  <p>So far, I've installed the delayed_job (3.0.3) and delayed_job_active_record (0.3.2) gems using my gemfile/bundler.  Because I don't have rails, I created my own migration file from the delayed_job readme, and migrated it.  I don't think any of this should be causing my issue.</p>
  
  <p>From all the docs I've seen, installing the gems should do the trick. I've tried uninstalling and reinstalling them, to no avail.  I'm not sure what else to try - perhaps there's something I need to explicitly include in my rakefile, but I haven't seen any docs that indicate that.  </p>
  
  <p>Any help greatly appreciated.  </p>