Add nbviewer badge

README.md

@@ -1,5 +1,5 @@
 # Hands-On Data Analysis with Pandas
-[![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/stefmolin/binder-environments/1st_edition?urlpath=git-pull?repo=https://github.com/stefmolin/Hands-On-Data-Analysis-with-Pandas) [![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/stefmolin/Hands-On-Data-Analysis-with-Pandas/blob/master) [![Purchase the book on Amazon](https://img.shields.io/badge/Amazon-purchase-orange?logo=amazon&logoColor=orange)](https://www.amazon.com/Hands-Data-Analysis-Pandas-visualization/dp/1789615321) 
+[![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/stefmolin/binder-environments/1st_edition?urlpath=git-pull?repo=https://github.com/stefmolin/Hands-On-Data-Analysis-with-Pandas) [![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/stefmolin/Hands-On-Data-Analysis-with-Pandas/blob/master) [![Nbviewer](https://img.shields.io/badge/render-nbviewer-lightgrey?logo=jupyter)](https://nbviewer.jupyter.org/github/stefmolin/Hands-On-Data-Analysis-with-Pandas/tree/master/) [![Purchase the book on Amazon](https://img.shields.io/badge/Amazon-purchase-orange?logo=amazon&logoColor=orange)](https://www.amazon.com/Hands-Data-Analysis-Pandas-visualization/dp/1789615321) 
 <a href="https://www.packtpub.com/big-data-and-business-intelligence/hands-data-analysis-pandas">  <img src="https://static.packt-cdn.com/products/9781789615326/cover/smaller" alt="Hands-On Data Analysis with Pandas" height="256px" align="right"></a>
 
 This is the code repository for my book [Hands-On Data Analysis with Pandas](https://www.packtpub.com/big-data-and-business-intelligence/hands-data-analysis-pandas), published by Packt on July 26, 2019.