_footer.erb in ginatra-4.1.0

- old
+ new

@@ -1,7 +1,3 @@
-<footer class="navbar navbar-fixed-bottom">
-  <nav class="navbar-inner">
-    <div class="container-fluid">
-      <p>Powered by <a href="https://github.com/narkoz/ginatra" target="_blank">Ginatra</a></p>
-    </div>
-  </nav>
+<footer>
+  <p class="text-center">Powered by <a href="https://github.com/narkoz/ginatra" target="_blank">Ginatra</a></p>
 </footer>