caouecs/Laravel4-lang — pull request #234 by EvgenyKovalev (2014-06-10 09:28:53+00:00)
Title: Boolean validation added.

https://github.com/laravel/laravel/blob/master/app/lang/en/validation.php

The translation tweaks a bit the meaning as literal translation with 'true' and 'false' sounds awkward.