unlink exception during utpdated files cleanup

Hi,
I was using your plugin for a while and noticed some exceptions 
ErrorException [ Warning ]: unlink(/var/www/darth/html/wp-content/uploads/wp-less/my-theme/..): Is a directory

/var/www/darth/html/wp-content/plugins/wp-less/lib/Garbagecollector.class.php [ 118 ]

113 	 * @param array $files
114 	 * @return array
115 	 */
116 	protected function deleteFiles(array $files)
117 	{
118 		return array_map('unlink', $files);
119 	}
120 }

I've fixed the Error by adding:
$dir->setFlags(RecursiveDirectoryIterator::SKIP_DOTS); 
for RecursiveDirectoryIterator to skip the Dots during iteration.