Version 1.0.0 release!

1.0.0 (25 Mar 2014)
 # General
 - compatible with elasticsearch-py 1.0 and Elasticsearch 1.0 (honzakral)
 - Lots of tests! (honzakral)
 - Streamline code for 1.0 ES versions (honzakral)

 # Bug fixes
 - Fix find_expired_indices() to not skip closed indices (honzakral)