Inserting CLI verification in 'application/core/Exceptions.php'

Inserting CLI verification in 'application/core/Exceptions.php'. 

I integrated Codeigniter with PHPUnit via hooks and if file don't exists the error output print the html error view file.

Because of this i insert the verification in method for optimize the output in CLI and implements a integration Codeigniter + PHPUnit via hooks example.

Link with a example explained:
http://willmendesnetoprojects.wordpress.com/2013/02/24/usando-phpunit-no-codeigniter-via-hooks/