How to create a TRIGGER in SEQUELIZE (nodeJS)?

Im trying to create a trigger using sequelize.. the main idea is to create an instance of CONFIG after create a USER.

//USER MODEL
module.exports = function(sequelize, DataTypes) {    
    var User = sequelize.define('User', {
        name        : DataTypes.STRING(255),
        email       : DataTypes.STRING(255),
        username    : DataTypes.STRING(45),
        password    : DataTypes.STRING(100),
    }, {
        classMethods : {
            associate : function(models) {
                User.hasOne(models.Config)
            }
        }
    });    
    return User;
};

//CONFIG MODEL
module.exports = function(sequelize, DataTypes) {
    var Config = sequelize.define('Config', {
        notifications   : DataTypes.INTEGER
    }, {
        classMethods : {
            associate : function(models) {
                Config.belongsTo(models.User)
            }
        }
    });

    return Config;
};

As you can see, a "user" has one "config" and a "config" belongs to a "user", so after a user is created I want to create his config row automatically.

The goal is to do:

DELIMITER //
CREATE TRIGGER create_config AFTER INSERT ON user
  FOR EACH ROW
BEGIN
    insert into config    (user_id)     values(new.user_id);
END; //
DELIMITER ;

How I'd do it?

Thank you!