- Revise all exposition
 - Remove gradle artifacts and instructions for now
 - Eliminate @Configuration class
 - Convert tabs to spaces in .java and .xml files
 - Preserve empty directory structure in 'initial'

 - See ./test/run.sh
 - See https://drone.io/github.com/springframework-meta/gs-rest-service

The 'start' version has missing bits in the pom.xml as well as differences in what
the guide said. After comparing with 'complete', made the fixes and updated the
guide appropriately so it should work top-to-bottom if you use 'start' and really
copy-n-paste your way along.

Work in progress, pushing now in order to share with rest of content
team.