Update README.md

Author: ankitbit

README.md

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 - [Bayesian Methods for Machine Learning](https://mingyuanzhou.github.io/STA380/)
 
 - [Bayesian Data Analysis](http://knuthlab.rit.albany.edu/courses/2015/BayesianDataAnalysis/): Lectures by Kevin Knuth, 
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+- [Bayesian Reasoning and Machine Learning](http://web4.cs.ucl.ac.uk/staff/D.Barber/textbook/091117.pdf)