Update the contributor list

Author: csev

book.php

@@ -6,7 +6,7 @@
      <div class="small-12 medium-12 large-3 large-push-9 columns">
         <div class="text-center">
             <a href="https://www.createspace.com/6071911" target="_blank">
-                <img width="auto" height="100%" src="cover3.jpg" alt="A picture of the book cover art"/>
+                <img width="auto" height="100%" src="cover3-final.jpg" alt="A picture of the book cover art"/>
             </a>
         </div>
     </div>

book3/AC-contrib.mkd

@@ -2,6 +2,28 @@
 Contributions
 =============
 
+Contributor List for Python for Everybody 
+-------------------------------------------
+
+Elliott Hauser,
+Chris Kolosiwsky,
+Dustin Farley,
+Jens Leerssen,
+Naveen KT,
+Mirza Ibrahimovic,
+Naveen (@togarnk),
+Zhou Fangyi,
+Alistair Walsh,
+Erica Brody,
+Jih-Sheng Huang,
+Louis Luangkesorn,
+and
+Michael Fudge
+
+You can see contribution details at:
+
+https://github.com/csev/pythonlearn/graphs/contributors
+
 Contributor List for Python for Informatics 
 -------------------------------------------