aparo/pyes — pull request #343 by boekkooi (2013-11-13 04:47:28+00:00)
Title: Bulk create throws invalid BulkOperationException

When using:
```python
es.index(doc, ELASTICSEARCH_INDEX, document_type, bulk=True, force_insert=True)
es.flush_bulk(forced=True)
```
This was throwing a invalid BulkOperationException exception.

P.S. elasticsearch version 0.90.6