static private function diff($a, $b)
	{
		$a_code = explode("\n", file_get_contents($a));
		$b_code = explode("\n", file_get_contents($b));
		$diff   = new \Diff($b_code, $a_code, array(
			'ignoreWhitespace' => TRUE,
			'ignoreNewLines'   => TRUE
		));

		return $diff->render(new \Diff_Renderer_Text_Unified());
	}