Adding a new way to deal with texts/words

Hello!

I'm here to propose a new way to deal with words in Phalcon. Now, Slug.php is Text.php and the scope of this mechanism is bigger than ever!

Regardless of this situation, I'm bringing to Phalcon a very useful feature called "pluralize" (read the docs to learn more) that was [requested by a user](http://forum.phalconphp.com/discussion/195/plural-in-nativearray-) a long time ago.

*All documentation and implementation is ready-to-go.*