public function help()
    {
        $this->setGlobalIndent(0);
        echo $this->yellow->render('Usage:');
        echo $this('  phillip [options] [file|directory]');

        echo $this('');
        echo $this->yellow->render('Options:');
        echo $this('  -h, --help           Show help text and exit.');
        echo $this('  -v, --version        Show version information and exit.');
        echo $this('  -c, --coverage       Show coverage data.');
        echo $this('  -s, --suite <suite>  Run a predefined test suite.');
        echo $this('  -r, --random         Run tests within each suite in random order.');
    }