add mailchimp script

_layouts/default.html

@@ -144,6 +144,9 @@ http://fullhacker.com -->
     Analytics"></a></div></noscript>
     <!-- End of Statcounter Code -->
 
+    <!-- Mailchimp -->
+    <script id="mcjs">!function(c,h,i,m,p){m=c.createElement(h),p=c.getElementsByTagName(h)[0],m.async=1,m.src=i,p.parentNode.insertBefore(m,p)}(document,"script","https://chimpstatic.com/mcjs-connected/js/users/85102052c447ce8a8bba06f24/657177ae5f85b54cabb15408b.js");</script>
+
 </body>
 
 </html>