NamedBase deprecation message is confusing

[gruppjo]

Hi and thanks for the new release :)

I just upgraded to yeoman-generator v.0.22.1 and got deprecation warnings.

(!) require('yeoman-generator').generators.Base is deprecated. Use require('yeoman-generator').Base directly

I kept looking for lines of code that used generators.Base but there were none. It took me a while to find out that generators.NamedBase is also deprecated. Turns out that they were the cause for the deprecation warnings, which I found misleading, since generators.Base was mentioned in the deprecation warnings.

[rosegbn]

I also encountered that when I installed npm i -g generator-webapp.

[SBoudrias]

a PR to make the message more helpful is welcomed!

[mischah]

I’m going to submit a PR to fix that