Update README.md

iluwatar · iluwatar · commit 128aff280221 · 2014-08-21T20:09:30.000+03:00
diff --git a/README.md b/README.md
@@ -51,3 +51,6 @@
 
 ##Iterator
 **Intent:** Provide a way to access the elements of an aggregate object sequentially without exposing its underlying representation.
+
+##Mediator
+**Intent:** Define an object that encapsulates how a set of objects interact. Mediator promotes loose coupling by keeping objects from referring to each other explicitly, and it lets you vary their interaction independently.
