Update tests
Simpler games format
Interstellar Marines works
Hide the best game
Rework README to cover the new format for GAMES.json

Minor example tweaks, reorder credits list based on shortlog -n, add
myself /smug, url → URL.
Fix a typo noticed after my rewrap! Correct "Hidden" description.
Out of the Park Baseball 14 and 15 work
Have testSorting return the faulty key in the error msg