We're already rendering flash in `_head.html.erb`

```
      <% [:notice, :error, :alert].each do |level| %>
        <% unless flash[level].blank? %>
          <div class="alert alert-block">
            <a class="close" data-dismiss="alert" href="#">&times;</a>
            <%= content_tag :p, flash[level] %>
          </div>
        <% end %>
      <% end %>
```

Could you add `:success` to that list? I actually prefer doing `flash.each`, I didn't know that was an option.