add nashorn tutorial link

README.md

 Java 8 Tutorial
 ==============
 
-This repository contains all code samples from the Java 8 Tutorial of my blog:
+This repository contains all code samples from the Java 8 Tutorials of my blog:
 
-http://winterbe.com/posts/2014/03/16/java-8-tutorial/
+- http://winterbe.com/posts/2014/03/16/java-8-tutorial/
+- http://winterbe.com/posts/2014/04/05/java8-nashorn-tutorial/
 
 I'm adding new samples from time to time, but feel free to fork and try it yourself.
 
@@ -11,4 +12,4 @@ I'm adding new samples from time to time, but feel free to fork and try it yours
 Contribute
 ==============
 
-You can contribute your own java 8 examples by sending me pull requests.
+Want to share your own java 8 code samples? Feel free to fork the repo and send me a pull request.