PATCH for allowing pluralize to take a block

Here's a patch that allows pluralize to take a block. The use case I run into is something like:

<%= pluralize(122, "chicken") %>

But I want to put specific tags around the count, or around the word.

This patch allows you to ...

<% pluralize(123, "chicken") do |count, word| -%>
  <em><%= count %></em><strong><%= word %></strong>
<% end -%>`

Which results in

<em>123</em><strong>chickens</strong>