maintainer: indicate Kevin Bullock as current maintainer.

This is a follow-up to https://bitbucket.org/durin42/hg-git/issues/261

Author: muxator

index.html

@@ -195,7 +195,7 @@ <h3>Installing Hg-Git manually</h3>
       <div id="bottom">
         This plugin was originally developed by the folks
         at <a href="https://github.com">GitHub</a>, and is currently
-        maintained by Augie Fackler.
+        maintained by Kevin Bullock.
       </div>
     </div>