Update README.md

Author: unpingco

README.md

@@ -2,5 +2,5 @@ Jupyter Notebooks for Springer book [Python for Probability, Statistics, and Mac
 
 ![Draft cover](./python_for_probability_statistics_and_machine_learning.jpg)
 
-**NOTE**: [Second edition is now available](https://www.springer.com/gp/book/9783030185442) with 
+**NOTE**: [Second edition updated for Python 3.6+ is now available](https://www.springer.com/gp/book/9783030185442) with 
 corresponding [Jupyter Notebooks](https://github.com/unpingco/Python-for-Probability-Statistics-and-Machine-Learning-2E)