showing commandline help

[BananaAcid]

There is no mentioning anywhere how to show a commandline help - or if it has to be implemented manually.

[mnahkies]

I was just wondering if this is supported as well - would be great to be able to get a basic automatic help text

[A-312]

We can do that with convict or maybe with an external package, or convict dependancie like : yargs-parser but I think is not the goal of convict

https://github.com/mozilla/node-convict/blob/be350a7ded016543b3eea16953be1f81c4bf34be/package.json#L43