Create readme.md

Author: javaHelper

05.Using-apigw-part1/readme.md

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+# Using APIGW
+
+1) HTTP GET
+
+```sh
+curl --location --request GET 'http://localhost:9090/student-service/api/student/getById/1' \
+--header 'Authorization: ABC'
+```
+
+Response:
+
+```json
+{
+    "id": 1,
+    "firstName": "Raj",
+    "lastName": "Dave",
+    "email": "raj_dave@yahoo.com",
+    "addressResponse": {
+        "addressId": 1,
+        "street": "Delhi",
+        "city": "Happy Street"
+    }
+}
+```