behavior handler annotation added

Author: knetic0

src/main/java/com/mehmetsolak/mediator/annotation/BehaviorHandler.java

@@ -0,0 +1,11 @@
+package com.mehmetsolak.mediator.annotation;
+
+import org.springframework.stereotype.Component;
+
+import java.lang.annotation.*;
+
+@Target(ElementType.TYPE)
+@Retention(RetentionPolicy.RUNTIME)
+@Documented
+@Component
+public @interface BehaviorHandler { }