Updated link to Sutton's book

Author: Alex

README.md

@@ -2,7 +2,7 @@
 
 This repository provides code, exercises and solutions for popular Reinforcement Learning algorithms. These are meant to serve as a learning tool to complement the theoretical materials from
 
-- [Reinforcement Learning: An Introduction (2nd Edition)](http://incompleteideas.net/sutton/book/bookdraft2017june.pdf)
+- [Reinforcement Learning: An Introduction (2nd Edition)](http://incompleteideas.net/book/bookdraft2017nov5.pdf)
 - [David Silver's Reinforcement Learning Course](http://www0.cs.ucl.ac.uk/staff/d.silver/web/Teaching.html)
 
 Each folder in corresponds to one or more chapters of the above textbook and/or course. In addition to exercises and solution, each folder also contains a list of learning goals, a brief concept summary, and links to the relevant readings.