Add README.md to document FasterXML Jackson Examples project

Author: Subhransu-De

README.md

@@ -0,0 +1,57 @@
+# FasterXML Jackson Examples
+
+This project demonstrates various FasterXML Jackson annotations in a Spring Boot application. It showcases common JSON serialization and deserialization scenarios using Jackson annotations.
+
+## Features
+
+The project includes examples of the following Jackson annotations:
+
+1. **Basic JSON Serialization** (`/hello`)
+   - Simple example of JSON response using Spring RestController
+
+2. **@JsonIgnore** (`/jsonIgnore`)
+   - Demonstrates how to exclude fields from JSON serialization
+   - Example shows a field marked with `@JsonIgnore` being excluded from the response
+
+3. **@JsonProperty** (`/jsonProperty`)
+   - Shows how to customize field names in JSON output
+   - Converts camelCase Java field names to snake_case JSON properties
+
+4. **@JsonInclude** (`/jsonInclude`)
+   - Demonstrates how to control which fields are included in JSON output
+   - Example shows excluding null fields from the response
+
+## Requirements
+
+- Java 21
+- Spring Boot 3.4.5
+
+## Running the Application
+
+You can run the application using the Maven wrapper:
+
+```bash
+./mvnw spring-boot:run
+```
+
+## Testing
+
+To run the tests:
+
+```bash
+./mvnw test
+```
+
+## Endpoints
+
+1. `GET /hello` - Returns a simple JSON message
+2. `GET /jsonIgnore` - Demonstrates @JsonIgnore annotation
+3. `GET /jsonProperty` - Shows @JsonProperty annotation usage
+4. `GET /jsonInclude` - Demonstrates @JsonInclude annotation
+
+## Technologies Used
+
+- Spring Boot
+- FasterXML Jackson
+- JUnit 5
+- Spring Test