Update README.md

Author: knowledgefactory4u

README.md

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-# spring-webflux-azure-cosmos-db-sql-api-crud
-Building Reactive REST CRUD APIs with Spring Boot, Spring WebFlux, Azure Cosmos DB and Azure Cosmos DB SQL API
+# Building Reactive REST CRUD APIs with Spring Boot, Spring WebFlux, Azure Cosmos DB and Azure Cosmos DB SQL API
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+# Local setup
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+Step 1: Download or clone the source code from GitHub to the local machine
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+Step 2:  ```mvn clean install```
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+Step 3:  ```mvn spring-boot:run```
+
+More Info - https://www.knowledgefactory.net/2022/07/building-reactive-rest-crud-apis-with-spring-boot-spring-webflux-azure-cosmos-db-and-azure-cosmos-db-sql-api.html
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