Update elasticsearch to 1.5.0

Closes #77.

Author: dadoonet

pom.xml

@@ -39,7 +39,7 @@ governing permissions and limitations under the License. -->
     <parent>
         <groupId>org.elasticsearch</groupId>
         <artifactId>elasticsearch-parent</artifactId>
-        <version>1.5.0-SNAPSHOT</version>
+        <version>1.5.0</version>
     </parent>
 
     <properties>