Support ElasticSearch 1.0.0

This pull requests shoud add support for ElasticSearch 1.0.0. The changes to the ES API were
 - replace ElasticSearchException with ElastisearchException
 - indices now returned as a ImutableOpenMap

I increased the version to 1.3.0-SNAPSHOT (hope it's the correct next one). From what I tested it works correctly with Couchbase 2.2 and ElasticSearch 1.0.0