This release adds API documentation with Swagger

Aligns with Part 4 of tutorial:
https://medium.com/@adamzink/creating-an-api-with-spring-boot-and-mysql-part-4-d39edbe87b53

This release adds REST endpoint to GET, PUT, and DELETE Users

Aligns with Part 3 of tutorial:
https://medium.com/@adamzink/creating-an-api-with-spring-boot-and-mysql-part-3-f1b5ef9334c0

This release adds REST endpoint to POST a new User

Aligns with Part 2 of tutorial:
https://medium.com/@adamzink/getting-started-with-spring-boot-hibernate-jersey-and-mysql-part-2-b9f98a1bbbae

Revision 1 notes:

• Call User service directly from resource to simplify class structure

This release adds REST endpoint to POST a new User

Aligns with Part 2 of tutorial:
https://medium.com/@adamzink/getting-started-with-spring-boot-hibernate-jersey-and-mysql-part-2-b9f98a1bbbae

Aligns with Part 1 of Spring Boot tutorial:
https://medium.com/@adamzink/getting-started-with-spring-boot-hibernate-jersey-and-mysql-part-1-abd38ec3e639