Added book reference.

iluwatar · iluwatar · commit 911a3505b2d6 · 2015-03-29T22:03:07.000+03:00
diff --git a/README.md b/README.md
@@ -475,6 +475,7 @@ The difference is the intent of the patterns. While Proxy controls access to the
 * [Let’s Modify the Objects-First Approach into Design-Patterns-First](http://edu.pecinovsky.cz/papers/2006_ITiCSE_Design_Patterns_First.pdf)
 * [Pattern Languages of Program Design](http://www.amazon.com/Pattern-Languages-Program-Design-Coplien/dp/0201607344/ref=sr_1_1)
 * [Martin Fowler - Event Aggregator](http://martinfowler.com/eaaDev/EventAggregator.html)
+* [Functional Programming in Java: Harnessing the Power of Java 8 Lambda Expressions](http://www.amazon.com/Functional-Programming-Java-Harnessing-Expressions/dp/1937785467/ref=sr_1_1)
 
 
 
