Update to elasticsearch 1.2.0

elasticsearch 1.2.0 has been released. We need to update from SNAPSHOT to released version.

Closes #26.

(cherry picked from commit ae3f3c23e3fde3b2327c1b5d759ff27675ecb40c)
Update to elasticsearch 1.3.0

Closes #27.
(cherry picked from commit 5effcce)