Translated names of the languages

Change on LaravelLocalization to return translated names for the allowed languages.

To use just create a new file in app/lang directory with the name localization.php.
Example:
<?php // app/lang/en/localization.php

return array(
   'en' => 'English',
   'es' => 'Spanish',
   'pt' => 'Portuguese',
   'it' => 'Italian'
);

<?php // app/lang/es/localization.php

return array(
   'en' => 'Ingl&eacute;s',
   'es' => 'Espa&ntilde;ol',
   'pt' => 'Portugu&eacute;s',
   'it' => 'Italiano'
);

If the file not exist the name in the supportedLanguages array will be returned.