EllisLab/CodeIgniter — pull request #1116 by tubalmartin (2012-03-03 21:15:59+00:00)
Title: 2.1 stable - An improved url_title helper function

I'm pulling an improved url_title function.
Tests: http://codepad.org/tuJgvkyN
Tests taken from:
- https://github.com/EllisLab/CodeIgniter/blob/feature/unit-tests/tests/codeigniter/helpers/url_helper_test.php
- https://github.com/EllisLab/CodeIgniter/pull/252