Added twitter link

cassiozen · cassiozen · commit b9b4fc7c4842 · 2016-01-03T10:38:00.000-02:00
diff --git a/index.html b/index.html
@@ -193,7 +193,7 @@ <h2>About the Author</h2>
 
 <p>He has developed and contributed to projects for major brands such as Microsoft, Coca-Cola, Unilever, and HSBC, among others.</p>
 
-<p> His startup was acquired in late 2014. Currently Cássio works as a consultant.</p>
+<p>His startup was acquired in late 2014. Currently Cássio works as a consultant. You can follow him on Twitter (<a href="https://twitter.com/cassiozen">@cassiozen</a>)</p>
 
 </div>
 </div>
