Update README.md

Author: saimaz

Diff for: README.md

@@ -11,7 +11,7 @@ If you have any questions, don't hesitate to ask them on [![Join the chat at htt
 [![Scrutinizer Code Quality](https://scrutinizer-ci.com/g/ongr-io/ElasticsearchDSL/badges/quality-score.png?b=master)](https://scrutinizer-ci.com/g/ongr-io/ElasticsearchDSL/?branch=master)
 
 __This component requires Elasticsearch 2.0 or newer.__
-> Warning: Amazon Elasticsearch Service currently supports only Elasticsearch 1.5.2. and cannot be used.
+> Warning: If you are using Amazon Elasticsearch Service (currently supports only Elasticsearch 1.x) use Elasticsearch DSL 1.x version. 
 
 ## Documentation