Update version help command

[donnywdavis]

I'm sure that this could be considered a personal preference, but wanted to submit to see what others think.

When checking for the version number of a cli I always assume that -v is available as a short name and try that before --version. However, using the built in version property on CommandConfiguration only enables the long format of --version. If we want to enable -v then we have to implement our own version flag and ignore the property in the configuration.

This is just a small change to make -v available as a short name for the version flag.

OPTIONS:
  -v, --version           Show the version.
  -h, --help              Show help information.

---

If we wanted to make this more flexible then we could extend CommandConfiguration to also accept a NameSpecification for the version. I just went with the simplest approach for now.

I also understand that an argument could be made that this would conflict with a flag called verbose. Someone may want to use -v as the short name for that. By making -v available in CommandConfiguration it removes the option when having both of these flags in a single command. I feel like having the version number is more common than having a flag called verbose, so I personally wouldn't consider it a blocker as the verbose flag could just use the long name or a different custom short name. Just my opinion. Curious what y'all think.

Checklist

• I've added at least one test that validates that my change is working, if appropriate
• I've followed the code style of the rest of the project
• I've read the Contribution Guidelines
• I've updated the documentation if necessary

[rauhul]

I think this overlaps too much with using -v for --verbose @natecook1000 ?