Lou Login: Authenticate users stored in a MySQL database

This class performs the access control users on a system. 

This class can authenticate users in a database. 
it's performs a query to the database, retrieve the hashed password
of the user account via e-mail. 
The class compares the typed password 
with the password database to verify that it is correct for the given user.

	EXAMPLE : 
  
	$endereco = new Lou_Auth_User('mail@domain.com', 'xxxxxxxxxx');
	var_dump($endereco->isAuthUser());
 
 If you do not want to use the Lou_registo.php file, 
 you can create the table "users" in the database "test" and visit the site 
 http://online-code-generator.com/md5-hash-with-optional-salt.php
 to generate the md5 hash. 
 Must then insert it into the database table.
 
	//criar tabela users
	'CREATE TABLE IF NOT EXISTS users (
	id INT(5) NOT NULL AUTO_INCREMENT,
	password VARCHAR(128) NOT NULL,
	email VARCHAR(255) NOT NULL, 
	PRIMARY KEY(id),
	UNIQUE KEY(email) 
	) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=1';