This is the source code for my blog post of the same name. Note that each commit prior to the one that adds the README corresponds to a stage in the blog post:
▶ git log --oneline
ccc3c60 (HEAD -> master) Refactor for Java Properties example
0e47532 Refactor for Inifile example
26bbb79 Add example to test JSON file data
042e83b Refactor to use sourced file
7dfab16 Add test for JSON field data
901a5de Add the missing comma for valid JSON
e45fd04 Add a failing test
f0f4e84 Initial commit