You can edit template file index.php, at line 386 you can see:
<div class="top-bar">
<div class="container">
<div class="row">
<div class="col-xs-6"></div>
<div class="col-xs-6 text-right">
<a class="top-menu-toggle visible-xs"><i class="fa fa-user"></i></a>
<div class="top-menu">
<!-- jdoc statement -->
</div>
</div>
</div>
</div>
</div>
modify to:
<div class="top-bar">
<div class="container">
<div class="row">
<div class="col-xs-12 text-right">
<a class="top-menu-toggle visible-xs"><i class="fa fa-user"></i></a>
<div class="top-menu">
<!-- jdoc statement -->
</div>
</div>
</div>
</div>
</div>
joomfreak