Add "Open with Codeanywhere" badge to readme.md

Author: nkkko

readme.md

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 [![Open in GitHub Codespaces](https://github.com/codespaces/badge.svg)](https://codespaces.new/mehdihadeli/food-delivery-microservices)
 
+[![Open in Codeanywhere](https://codeanywhere.com/img/open-in-codeanywhere-btn.svg)](https://app.codeanywhere.com/#https://github.com/mehdihadeli/food-delivery-microservices)
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 > `Food Delivery Microservices` is a fictional food delivery microservices, built with .Net Core and different software architecture and technologies like **Microservices Architecture**, **Vertical Slice Architecture** , **CQRS Pattern**, **Domain Driven Design (DDD)**, **Event Driven Architecture**. For communication between independent services, we use asynchronous messaging with using rabbitmq on top of [MassTransit](https://github.com/MassTransit/MassTransit) library, and sometimes we use synchronous communication for real-time communications with using REST and gRPC calls.