  from django.conf.urls.defaults import patterns, url
  from requestexample.views import RequestExampleView, MockView, EchoRequestContentView
  
  urlpatterns = patterns('',
      url(r'^$', RequestExampleView.as_view(), name='request-example'),
      url(r'^content$', MockView.as_view(view_class=EchoRequestContentView), name='request-content'),
  )
 
</s> remove         response = Response(200, {'description': 'Some example content',
                                  'url': reverse('mixin-view')})
        return self.render(response)
 </s> add         response = Response({'description': 'Some example content',
                                  'url': reverse('mixin-view')}, status=200)
        return self.prepare_response(response)
from requestexample.views import RequestExampleView, EchoRequestContentView
from examples.views import MockView

  from django.conf.urls.defaults import patterns, url
from requestexample.views import RequestExampleView, EchoRequestContentView
from examples.views import MockView

  
  urlpatterns = patterns('',
      url(r'^$', RequestExampleView.as_view(), name='request-example'),
      url(r'^content$', MockView.as_view(view_class=EchoRequestContentView), name='request-content'),
  )
keep replace keep keep keep keep keep
 modified examples, somethin' still broken, can't find what 
examples/requestexample/urls.py