Add 1.6 branch

Author: dadoonet

README.md

@@ -15,7 +15,8 @@ You need to install a version matching your Elasticsearch version:
 | Elasticsearch | AWS Cloud Plugin | Docs |
 |------------------------|-------------------|------------------------------------------------------------------------------------------------------------------------------------|
 | master | Build from source | See below |
-| es-1.x | Build from source | [2.6.0-SNAPSHOT](https://github.com/elasticsearch/elasticsearch-cloud-aws/tree/es-1.x/#version-260-snapshot-for-elasticsearch-1x) |
+| es-1.x | Build from source | [2.7.0-SNAPSHOT](https://github.com/elastic/elasticsearch-cloud-aws/tree/es-1.x/#version-270-snapshot-for-elasticsearch-1x) |
+| es-1.6 | 2.6.0 | [2.6.0](https://github.com/elastic/elasticsearch-cloud-aws/tree/v2.6.0/#version-260-for-elasticsearch-16) |
 | es-1.5 | 2.5.1 | [2.5.1](https://github.com/elastic/elasticsearch-cloud-aws/tree/v2.5.1/#version-251-for-elasticsearch-15) |
 | es-1.4 | 2.4.2 | [2.4.2](https://github.com/elasticsearch/elasticsearch-cloud-aws/tree/v2.4.2/#version-242-for-elasticsearch-14) |
 | es-1.3 | 2.3.0 | [2.3.0](https://github.com/elasticsearch/elasticsearch-cloud-aws/tree/v2.3.0/#version-230-for-elasticsearch-13) |