Add @QueryAnnotation meta annotation to @query.

Original Pull Request #1939 
Closes #1938

Author: Stexxen

Diff for: src/main/java/org/springframework/data/elasticsearch/annotations/Query.java

@@ -15,6 +15,7 @@
  */
 package org.springframework.data.elasticsearch.annotations;
 
+import org.springframework.data.annotation.QueryAnnotation;
 import java.lang.annotation.*;
 
 /**
@@ -23,11 +24,13 @@
  * @author Rizwan Idrees
  * @author Mohsin Husen
  * @author Peter-Josef Meisch
+ * @author Steven Pearce
  */
 
 @Retention(RetentionPolicy.RUNTIME)
 @Target({ElementType.METHOD, ElementType.ANNOTATION_TYPE})
 @Documented
+@QueryAnnotation
 public @interface Query {
 
 	/**