Microservices resource server: Added README file

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+This project exposes REST endpoints (accessed by API gateway) and the endpoints are secured by OAuth2.
+
+Some pom.xml dependencies:
+  To make this Spring Boot project an OAuth2 resource server (Allow access from OAuth2 clients):
+    <dependency>
+  	<groupId>org.springframework.boot</groupId>
+  	<artifactId>spring-boot-starter-security-oauth2-resource-server</artifactId>
+    </dependency>
+
+  To use H2 in-memory database (as configured in main/src/resources/application.yaml file):
+    <dependency>
+  	<groupId>com.h2database</groupId>
+  	<artifactId>h2</artifactId>
+  	<scope>runtime</scope>
+    </dependency>
+
+  To use H2 database console accessible via a web browser:
+    <dependency>
+  	<groupId>org.springframework.boot</groupId>
+  	<artifactId>spring-boot-h2console</artifactId>
+    </dependency>
+
+How to access the H2 database console:
+  URL: http://localhost:8052/myservices/h2-console
+  Details (as configured in application.yaml file):
+    Database name: jdbc:h2:mem:testdb
+    Username: sa
+    Password: password