Merge pull request #50 from hossein761/master

Added byIdAsync to Finder in Index

Author: mguillermin

module/app/com/github/cleverage/elasticsearch/Index.java

@@ -191,6 +191,15 @@ public T byId(String id) {
             return IndexService.get(queryPath, type, id);
         }
 
+        /**
+         * Asynchronously retrieves an entity by ID.
+         * @param id
+         * @return
+         */
+        public F.Promise<T> byIdAsync(String id){
+            return IndexService.getAsync(queryPath, type, id);
+        };
+
         /**
          * Retrieves all entities of the given type.
          */