A simple Thymeleaf tutorial in Spring Boot.

See: https://spring.io/guides/gs/serving-web-content/

Type this	to get this result
mvn package	to make a jar file
mvn spring-boot:run	to run the web app
in browser: http://localhost:8080/greeting/	to see "Hello, World!"
in browser: http://localhost:8080/greeting?name=Gauchos	to see "Hello, Gauchos!"