Update README.md

Author: rasbt

Diff for: README.md

@@ -5,6 +5,8 @@
 ![License](https://img.shields.io/badge/Code%20License-MIT-blue.svg)
 
 
+*Please note that a new edition (3rd edition) is now available as of December 2019. The code repository link for the 3rd edition is https://github.com/rasbt/python-machine-learning-book-3rd-edition.*
+
 
 **Python Machine Learning, 2nd Ed.**  
 
@@ -108,4 +110,4 @@ Raschka, Sebastian, and Vahid Mirjalili. *Python Machine Learning, 2nd Ed*. Pack
 - ISBN-13: 978-4295003373
 - [Amazon.co.jp link](https://www.amazon.co.jp/Python-機械学習プログラミング-達人データサイエンティストによる理論と実践-impress-gear/dp/4295003379/ref=tmm_pap_swatch_0)
 
-![](images/cover-japanese.jpg)
+![](images/cover-japanese.jpg)