Improve "GDK_ROOT not found" message

Closes https://gitlab.com/gitlab-org/gitlab-development-kit/issues/168

@jneen what do you think of this?

This would need a new gem release (cc @grzesiek )

Mentioned in issue #168 (closed)

This is okay - I would add a usage note for gdk init, similar to the usage in the happy case:

gdk init <directory>           initializes a new gdk directory

Added 1 commit:

• 495ff815 - Show usage for gdk init when root not found

Compare with previous version

Thanks @jneen I added a usage note.

Status changed to merged

Mentioned in commit 5109ecbc

This would need a new gem release (cc @grzesiek )

It looks like new version has been released (0.2.4) after merging this MR, so I assume that no action is needed at this point.

Yes d873af58 marks the gem release.