trying as a monkey patch. Tested up to 4
tested up to 9
good up to forty
good up to 90
OK to 400
completed - now looking to refactor
started to add some input validation checks
written a regex to match a valid roman numeral - could do with more tests
refined regex and added annotation
Merge pull request #1 from gypsydave5/master

Merging in monkey patch to String and regex matching