title: django-cron task not executing automatically
body: <p>When I run <code>python manage.py runcrons</code>, the cron job successfully executes (prints 'Executed'). But it doesn't do it automatically. It's supposed to execute every minute as I've stated in the Class. Here's the code:</p>
  
  <p>settings.py</p>
  
  <pre><code>CRON_CLASSES = [
      "app.views.MyCronJob"
  ]
  </code></pre>
  
  <p>app.views</p>
  
  <pre><code>class MyCronJob(CronJobBase):
      RUN_EVERY_MINS = 1
  
      schedule = Schedule(run_every_mins=RUN_EVERY_MINS)
      code = 'my_app.my_cron_job'    # not sure what this is supposed to be?
  
      def do(self):
          print('Executed')
  </code></pre>
  
  <p>Any idea?</p>