Log Message:
devel/ruby-ruby2_keywords: update to 0.0.2

Initial addition of this package was not version 0.0.2 but 0.0.1.
So, update it to really 0.0.2.

pkgsrc changes:

* Update HOMEPAGE.
* add "USE_LANGUAGES= # none".

0.0.2 (2019-12-03)

* A few bug fixes including example in README.md.