1. https://itbilu.com/nodejs/npm/VkYIaRPz-.html#api-init
2. http://docs.sequelizejs.com/manual/tutorial/querying.html
3. https://itbilu.com/nodejs/npm/41mRdls_Z.html
4. https://github.com/sequelize/sequelize-auto
5. sequelize-auto -o "./server/schema" -d todolist -h localhost -u root -p 3306 -e mysql