Merge pull request #52 from pymc-devs/README_Update

Add books to readme

Author: canyon289

README.md

@@ -3,6 +3,9 @@ PyMC3 educational resources, including PyMC3 port of books (original models in S
 
 -  [PyMC3 port of the book "Statistical Rethinking" by Richard McElreath](https://github.com/pymc-devs/resources/tree/master/Rethinking)  
 -  [PyMC3 port of the book "Bayesian Cognitive Modeling" by Michael Lee and EJ Wagenmakers](https://github.com/pymc-devs/resources/tree/master/BCM)  
+-  [PyMC3 port of the book "Bayesian Statistical Methods" by Brian J. Reich and Sujit K. Ghosh](https://github.com/pymc-devs/resources/tree/master/BSM)
+-  [PyMC3 port of the book "Bayesian Data Analysis" by Andrew Gelman, John B. Carlin, Hal S. Stern, David B. Dunson, Aki Vehtari and Donald B. Rubin](https://github.com/pymc-devs/resources/tree/master/BDA3)  
+
 
 
 # License