Upgraded to Hazelcast 3.2

Hello,

I have upgraded the dependencies to Hazelcast 3.2 - and updated small details in the Scala code to use the new Hazelcast API. 

All the tests pass, but I am stuck on using Elasticsearch 0.90.1 (when I try to upgrade to Elasticsearch 0.90.10, the test has problems registering the river.... any idea ?).

Could you add a Hazelcast 3.2 branch on your side ?

Thanks