How to render custom labels in draw_languages ?

Added option to render custom labels for draw_languages.
Sample: 

<%= current_site.draw_languages("language-list list-inline", true) do |lang, is_current| %>
<label><%= lang %>---<%= is_current %></label>
<% end %>
Created at: 04 Jun 13:38 | Updated at: 04 Jun 13:40