The promotions resource is a representation of a special promotion or sale that is running against a product or perhaps the entire store. Some examples are "buy 1 get 1 free", "20% off" etc.
Create a README.md file and make sure that you give instructions on what calls are available and what inputs they expect and how to run and test your code so that users will know hot it works.
Create a README.md file and make sure that you give instructions on what calls are available and what inputs they expect and how to run and test your code so that users will know hot it works.