Added Servant pattern source to the Credits section.

iluwatar · iluwatar · commit 57cef65eb48b · 2014-12-18T14:59:18.000+02:00
diff --git a/README.md b/README.md
@@ -380,6 +380,7 @@ The difference is the intent of the patterns. While Proxy controls access to the
 * [Design Patterns: Elements of Reusable Object-Oriented Software](http://www.amazon.com/Design-Patterns-Elements-Reusable-Object-Oriented/dp/0201633612)
 * [Effective Java (2nd Edition)](http://www.amazon.com/Effective-Java-Edition-Joshua-Bloch/dp/0321356683)
 * [Java Generics and Collections](http://www.amazon.com/Java-Generics-Collections-Maurice-Naftalin/dp/0596527756/)
+* [Let’s Modify the Objects-First Approach into Design-Patterns-First](http://edu.pecinovsky.cz/papers/2006_ITiCSE_Design_Patterns_First.pdf)
 
 
 
