title: Django haystack with elasticsearch, indexing issue
body: <p>Im using django-haystack with elasticsearch but there is a problem with indexing. When rebuilding my index <pre> python manage.py rebuild_index </pre> following error is raised:</p>
  
  <pre>
  Traceback (most recent call last):
    File "/home/palo/.virtualenvs/toro/local/lib/python2.7/site-packages/haystack/management/commands/update_index.py", line 210, in handle_label
      self.update_backend(label, using)
    File "/home/palo/.virtualenvs/toro/local/lib/python2.7/site-packages/haystack/management/commands/update_index.py", line 256, in update_backend
      do_update(backend, index, qs, start, end, total, self.verbosity)
    File "/home/palo/.virtualenvs/toro/local/lib/python2.7/site-packages/haystack/management/commands/update_index.py", line 78, in do_update
      backend.update(index, current_qs)
    File "/home/palo/.virtualenvs/toro/local/lib/python2.7/site-packages/haystack/backends/elasticsearch_backend.py", line 177, in update
      self.conn.bulk_index(self.index_name, 'modelresult', prepped_docs, id_field=ID)
    File "/home/palo/.virtualenvs/toro/src/pyelasticsearch/pyelasticsearch/client.py", line 95, in decorate
      return func(*args, query_params=query_params, **kwargs)
    File "/home/palo/.virtualenvs/toro/src/pyelasticsearch/pyelasticsearch/client.py", line 366, in bulk_index
      query_params=query_params)
    File "/home/palo/.virtualenvs/toro/src/pyelasticsearch/pyelasticsearch/client.py", line 221, in send_request
      **({'data': request_body} if body else {}))
    File "/home/palo/.virtualenvs/toro/src/requests/requests/sessions.py", line 387, in post
      return self.request('POST', url, data=data, **kwargs)
    File "/home/palo/.virtualenvs/toro/src/requests/requests/sessions.py", line 345, in request
      resp = self.send(prep, **send_kwargs)
    File "/home/palo/.virtualenvs/toro/src/requests/requests/sessions.py", line 448, in send
      r = adapter.send(request, **kwargs)
    File "/home/palo/.virtualenvs/toro/src/requests/requests/adapters.py", line 324, in send
      raise Timeout(e)
  Timeout: HTTPConnectionPool(host='127.0.0.1', port=9200): Request timed out. (timeout=10)
  Timeout: HTTPConnectionPool(host='127.0.0.1', port=9200): Request timed out. (timeout=10)
  </pre>
  
  <p>I used django-haystack - 2.0.0-beta, pyelasticsearch - 0.5, elasticsearch 0.20.6, java version "1.6.0_24"</p>
  
  <p><br/>
  <b> Haystack Settings </b></p>
  
  <pre>
  
      HAYSTACK_CONNECTIONS = {
          'default': {
              'ENGINE': 'haystack.backends.elasticsearch_backend.ElasticsearchSearchEngine',
              'URL': 'http://127.0.0.1:9200/',
              'INDEX_NAME': 'haystack',
          },
      }
  
  </pre>
  
  <p>And Im sure my elasticsearch serivce is running.</p>