Update README.md

Author: mehmetozkaya

README.md

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 # Serverless Event-driven E-commerce Microservices
 
+**UDEMY COURSE WITH DISCOUNTED - Step by Step Development of this Repository -> https://www.udemy.com/course/aws-serverless-microservices-lambda-eventbridge-sqs-apigateway/?couponCode=APRIL22**
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 ![course2](https://user-images.githubusercontent.com/1147445/158019166-96732203-6642-4242-b1d9-d53ece2e1ed3.png)
 
 This is a Serverless Event-driven E-commerce project for TypeScript development with CDK.