Create readme.md

Author: javaHelper

03.Using-Service-registry-eureka/readme.md

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+# Using Eureka Service Registry
+
+1) Http GET
+
+```
+http://localhost:8080/api/student/getById/1
+```
+
+Response:
+
+```json
+{
+    "id": 1,
+    "firstName": "Raj",
+    "lastName": "Dave",
+    "email": "raj_dave@yahoo.com",
+    "addressResponse": {
+        "addressId": 1,
+        "street": "Delhi",
+        "city": "Happy Street"
+    }
+}
+```