epri-vtn_custom/app/views/application/_header.html.erb

<nav class="navbar header" role="navigation">

  <div class="logo">
    <%= link_to(image_tag('epri-logo.jpg', alt: 'EPRI logo'), root_path, class: 'logo vissible-sm hidden-xs') %>
  </div>

  <h3 class="utility-id">
    Auto DR Test Server
  </h3>


  <ul class="header-actions">
    <li class="user-session-info">
      <% if signed_in? %>
        <%= link_to "Log out", logout_path, method: "delete", class: 'btn btn-primary' %>
        <span>
          <%= link_to current_account.name, current_account %>
        </span>
      <% else %>
        <%= link_to "Log in", login_path, class: 'btn btn-primary' %>
        <span>
          not signed in
        </span>
      <% end %>
    </li>
    <li>
      <%= link_to image_tag('epri-e.png'), about_path %>
      <span>About</span>
    </li>
  </ul>
</nav>