app/views/main/_sidebar.html.erb
<div class="header user-header">
<a href="#" class="user-menu-toggle">
<img src="<%= avatar_url_for(current_user, :size => 25) %>"/>
<i class="icon-angle button right"></i>
<%= current_user.full_name_or_username %>
</a>
<ul class="user-menu">
<li><%= link_to 'Admin console', admin_root_path if current_user.is_admin? %></li>
<li><%= link_to 'Edit Account', users_edit_path %></li>
<li><%= link_to 'Logout', destroy_user_session_path, :method => :delete %></li>
<li><%= link_to 'About Kandan', about_path %></li>
</ul>
</div>
<div class="widgets"></div>