See com.template.spark.SparkMain for template HTTP GET routes including WADL/Swagger:
http://pcoleman-ws-template.herokuapp.com
https://pcoleman-ws-template.herokuapp.com/feed/v1
http://pcoleman-ws-template.herokuapp.com/feed/v1/swagger.json
http://pcoleman-ws-template.herokuapp.com/feed/v1/swagger.yaml
http://pcoleman-ws-template.herokuapp.com/feed/v1/openapi.yaml
http://pcoleman-ws-template.herokuapp.com/feed/v1/application.wadl