register documentation is unclear on requirements

[kevinthompson]

I found that I needed to extract the DragonRuby archive, then provide a path to the directory where the dragonruby executable exists. I also found that you cannot register a directory when you are in the folder itself.

Doesn't work

drenv register dragonruby-gtk-macos.zip
drenv register dragonruby-gtk-macos
cd dragonruby-gtk-macos/dragonruby-macos && drenv register .

Does Work

drenv dragonruby-gtk-macos/dragonruby-macos
cd dragonruby-gtk-macos && drenv register dragonruby-macos

Ideally the CLI could handle extracting the archive, but at the very least it would be helpful to provide more explicit guidance in the README

[Nitemaeric]

I've added some additional explicit guidance. Hopefully this improves clarity. bcb879d

I also found that you cannot register a directory when you are in the folder itself.

That's interesting. I'll do some investigation next week.