Fix links for jekyll and bootstrap.

Author: tbatchelli

_includes/foot.html

@@ -35,8 +35,8 @@ <h4>Contact</h4>
     <p class="pull-right"><a href="#"><br>Back to top</a></p>
     <p>
       <br>
-      Site built with <a target="_blank" href="">Jekyll</a> and
-      <a target="_blank" href="">Twitter Bootstrap</a>.<br>
+      Site built with <a target="_blank" href="http://jekyllrb.com">Jekyll</a> and
+      <a target="_blank" href="http://getbootstrap.com">Bootstrap</a>.<br>
       Copyright &copy; 2012 Hugo Duncan and Antoni Batchelli
     </p>
   </div>