Fix failing iframe gh watch widget

themes/twitter/layouts/default.html

@@ -25,10 +25,7 @@
         {{/ site.navigation?to_pages }}
         </ul>
         <ul class="nav social pull-right">
-          <li>
-            <iframe src="http://markdotto.github.com/github-buttons/github-btn.html?user=ruhoh&repo=ruhoh.rb&type=watch&count=true"
-              allowtransparency="true" frameborder="0" scrolling="0" width="110px" height="25px"></iframe>
-          </li>
+          <li><a href="https://github.com/ruhoh/ruhoh.rb/">Code on GitHub</a></li>
           <li><a href="https://twitter.com/ruhohBlog" class="twitter-follow-button" data-show-count="false" data-lang="en">Follow @ruhohBlog</a></li>
           <li><a href="https://twitter.com/share" class="twitter-share-button" data-lang="en" data-url="http://ruhoh.com" data-hashtags="ruhoh" data-text="New static blog generator for the hacker in all of us &rarr;">Tweet</a></li>
         </ul>