bcrypt.genSalt(10, function(err, salt) {
      bcrypt.hash("Password", salt, function(err, hash) {
        console.log("Le hash", hash);
        bcrypt.compare("NotgoodPass", hash, function(err, res) {
          console.log(res);
        });
        bcrypt.compare("Password", hash, function(err, res) {
          console.log(res);
        });
      });
    });