Example: https://github.com/camunda/camunda-bpm-examples/tree/master/example-dmn-rest

AT:

• Test with latest spring boot and adjust it accordingly
• Add a readme info
• Consider moving the example to spring boot folder: https://github.com/camunda/camunda-bpm-examples/tree/master/spring-boot-starter
• Add the example to the table on the general readme: https://github.com/camunda/camunda-bpm-examples#spring-boot-starter-examples