ruflin/Elastica — pull request #539 by danielmitd (2014-01-28 19:46:33+00:00)
Title: use the http response code instead of extists/found check.

In elasticsearch 1.0 (https://github.com/elasticsearch/elasticsearch/commit/2cb40fcb) the "exists" which is used in `Elastica\Type::getDocument` gets renamed to "found".

In fact it would be more stable to rely on the http code which is returned, instead of the actual response.