anchor.diff:                </a>
                 <ul class="dropdown-menu">
                   <li><%= link_to 'All Clubs', clubs_path %></li>
  +                <% if current_user %>
                   <li><%= link_to 'New Club', new_club_path %></li>
  +                <%end %>
                 </ul>
                 <b class="caret-out"></b>
               </li>
  
positive.code:               </a>
                <ul class="dropdown-menu">
                  <li><%= link_to 'All Shops', shops_path %></li>
                  <li><%= link_to 'New Shop', new_shop_path %></li>
                </ul>
                <b class="caret-out"></b>
              </li>
  
negative.code:               </a>
                <ul class="dropdown-menu">
                  <li><%= link_to 'All Beers', beers_path %></li>
                  <% if current_user %>
                  <li><%= link_to 'New Beer', new_beer_path %></li>
                  <%end %>
                </ul>
                <b class="caret-out"></b>
              </li>
  