public static function install()
    {
        sgToolkit::touch(sgConfiguration::get('settings.ZendAuthPlugin.passwd_path'));
        $message = <<<END
    You must place the Zend Framework in your project. ZendAuthPlugin will 
    automatically look in project_root/lib/vendor for the Zend dir, or you 
    can specify the lib dir with the config ZendAuthPlugin => zend_lib_path. 
    This path should be the directory containing the Zend dir, without 
    including the Zend/ dir itself. Also remeber to exclude the Zend path from
    the autoloader by adding this line to your ProjectConfiguration before
    the sgAutoload::register() call is made: 
    
    sgAutoloader::setExclusions(array(realpath('path/to/Zend')));
    
    Finally, you must add users to the /data/ZendAuthPlugin.passwd file in the format:

    username:realm:md5(username:realm:password)

END;
        sgCLI::println($message, sgCLI::STYLE_COMMENT);
    }