<nav class="navbar navbar-default">
  <div class="container-fluid">
    <!-- Brand and toggle get grouped for better mobile display -->
    <div class="navbar-header">
      <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
        <span class="sr-only">Toggle navigation</span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
      </button>
      <a class="navbar-brand" href="/">Just Drop IT</a>
    </div>

    <!-- Collect the nav links, forms, and other content for toggling -->
    <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
      <ul class="nav navbar-nav">
        <li><%= link_to 'About', pages_about_path %></li>
        <li><%= link_to 'Contact', pages_contact_path %></li>
      </ul>
    </div><!-- /.navbar-collapse -->
  </div><!-- /.container-fluid -->
</nav>

<nav class="navbar navbar-default">
  <div class="container-fluid">
    <!-- Brand and toggle get grouped for better mobile display -->
    <div class="navbar-header">
      <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
        <span class="sr-only">Toggle navigation</span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
      </button>
      <a class="navbar-brand" href="/">Just Drop IT</a>
    </div>

    <!-- Collect the nav links, forms, and other content for toggling -->
    <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
      <ul class="nav navbar-nav">
        <li><%= link_to 'About', pages_about_path %></li>
        <li><%= link_to 'Contact', pages_contact_path %></li>
      </ul>
      <ul class="nav navbar-nav navbar-right">
        <% if user_signed_in? %>
          <li><%= link_to 'Edit profile', edit_user_registration_path %></li>
          <li><%= link_to 'Sign Out', destroy_user_session_path, method: :delete %></li>
        <% else %>
          <li><%= link_to 'Sign Up', new_user_registration_path %></li>
          <li><%= link_to 'Sign In', new_user_session_path %></li>
        <% end %>
      </ul>
    </div><!-- /.navbar-collapse -->
  </div><!-- /.container-fluid -->
</nav>

Add link buttons for user sign in/ sign out
Add link buttons for user sign in/ sign out
