This README would normally document whatever steps are necessary to get the application up and running.

Things you may want to cover:

• Ruby version

• System dependencies

• Configuration

• Database creation

• Database initialization

• How to run the test suite

• Services (job queues, cache servers, search engines, etc.)

• Deployment instructions

• About the Objects : Cart (class) => items (An array) CartItem (class) => product_id, quatity

  Product (model) => title(string) , description(text) , price(int) , id

• TODOList： 1.frontend (Bootstrap) 2.Server端 資料查看 3.Login Page 4.商品狀態