app/views/instagram/_photos.html.erb
<p style="text-align:center;">
<% photos.each do |photo| %>
<a href="<%= photo.images.standard_resolution.url %>" rel="lightbox" title="<%= photo.caption.text if photo.caption %>">
<img src="<%= photo.images.thumbnail.url %>" border="0" title="<%= photo.caption.text if photo.caption %>" />
</a>
<% end %>
</p>