Update README.md

Author: jdantonio

README.md

@@ -9,6 +9,10 @@
 [![License](https://img.shields.io/badge/license-MIT-green.svg)](http://opensource.org/licenses/MIT)
 [![Gitter chat](https://img.shields.io/badge/IRC%20(gitter)-devs%20%26%20users-brightgreen.svg)](https://gitter.im/ruby-concurrency/concurrent-ruby)
 
+<img src="https://pbs.twimg.com/media/ClXc0vkWgAA3cP6.jpg:large"/>
+
+---
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 <table>
   <tr>
     <td align="left" valign="top">