add vis book

Author: zingale

docs/index.html

@@ -380,6 +380,8 @@ <h2>Matplotlib and plotting</h2>
 
 	    Readings:
 	    <ul>
+              <li><a href="https://serialmentor.com/dataviz/">Fundamentals of Data Visualization</a>
+                  by C. O. Wilke</li>
               <li>The
               official <a href="http://matplotlib.org/users/pyplot_tutorial.html"><em>matplotlib
 		    tutorial</em></a></li>