<div class="thumb-index well">

  <div class="row">
    <% @src_sets.each do |ss| %>
        <div class="col-xs-6 col-sm-3 col-md-2">
          <div class="thumbnail">
            <%= render :partial => ss %>
          </div>
        </div>
    <% end %>
  </div>

  <% if current_page? root_url %>
      <%= link_to 'More sets', :src_sets %>
  <% else %>
      <%= paginate @src_sets %>
  <% end %>

</div>

<div class="thumb-index well">

  <div class="row">
    <% @src_sets.each do |ss| %>
        <div class="col-xs-6 col-sm-3 col-md-2">
          <div class="thumbnail">
            <%= render(partial: ss) %>
          </div>
        </div>
    <% end %>
  </div>

  <% if current_page?(root_url) %>
      <%= link_to('More sets', :src_sets) %>
  <% else %>
      <%= paginate(@src_sets) %>
  <% end %>

</div>

Use ruby 1.9 style hashes.
Use ruby 1.9 style hashes.
