Nopt is a great tool for option parsing, but I miss a show usage message generator.
I've implemented a very simple one on top of nopt. I hope you will find it useful.
It doesn't change the behaviour of the rest of nopt, and it was implemented in a separate file.
This pull request also solve #7.
Add showUsage helper
update the README
Do you prefer that I publish this feature in npm ?
The name could be nopt-usage.
Doing this as a separate module would be better.