title: Django Rest Framework 3.1 breaks pagination.PaginationSerializer
body: <p>I just updated to Django Rest Framework 3.1 and it seems that all hell broke loose.</p>
  
  <p>in my <code>serializers.py</code> I was having the following code:</p>
  
  <pre><code>class TaskSerializer(serializers.ModelSerializer):
      class Meta:
      model = task
      exclude = ('key', ...)
  
  class PaginatedTaskSerializer(pagination.PaginationSerializer):
      class Meta:
          object_serializer_class = TaskSerializer
  </code></pre>
  
  <p>which was working just fine. Now with the release of 3.1 I can't find examples on how to do the same thing since <code>PaginationSerializer</code> is no longer there.
  I have tried to subclass <code>PageNumberPagination</code> and use its default <code>paginate_queryset</code> and <code>get_paginated_response</code> methods but I can no longer get their results serialized. </p>
  
  <p>In other words my problem is that I can no longer do this:</p>
  
  <pre><code>class Meta:
      object_serializer_class = TaskSerializer
  </code></pre>
  
  <p>Any ideas?</p>
  
  <p>Thanks in advance</p>