Aslan (for ZynxHealth Contractor):

Hi my name is Aslan, I will be facilitating this pull request for ZynxHealth.

  1) Updated POM to use ElasticSearch version 1.2.1 and Lucene version 4.8.1.
  2) Updated the plugin classes to fix compilation problems related to changes in the ElasticSearch Java API.
  3) Added REST-related classes to account for classes that were removed from previous ElasticSearch versions.