Thumbnails bootstrap thumbnails helper

Thumbnails helpers wraps bootstrap thumbnails component.

Thumbnails

<%= tns do %>
  <%= tn(3) do %>
    <h3>Title</h3%>
    <p>Description</p%>
  <% end %>
  <%= tn(3) do %>
    <h3>Title</h3%>
    <p>Description</p%>
  <% end %>
  <%= tn(3) do %>
    <h3>Title</h3%>
    <p>Description</p%>
  <% end %>
  <%= tn(3) do %>
    <h3>Title</h3%>
    <p>Description</p%>
  <% end %>
  <%= tn(6) do %>
    <h3>Title</h3%>
    <p>Description</p%>
  <% end %>
  <%= tn(6) do %>
    <h3>Title</h3%>
    <p>Description</p%>
  <% end %>
<% end %>