Please clarify the license

[voxik]

README.md says BSD-2-Clause:

irb/README.md

Lines 411 to 413 in 08eee25

	## License
	The gem is available as open source under the terms of the [2-Clause BSD License](https://opensource.org/licenses/BSD-2-Clause).

Also the LICENSE.txt is is BSD-2-Clause:

https://github.com/ruby/irb/blob/bd728dc634ac1ec148c884da156af86b8738d8f7/LICENSE.txt

While the .gemspec metadata specify Ruby or BSD-2-Clause

irb/irb.gemspec

Line 17 in 08eee25

spec.licenses = ["Ruby", "BSD-2-Clause"]

[st0012]

Thanks for raising this. I'm following the discussions in ruby/resolv#45 and this ticket. And I will try to follow the recommended practice provided by Ruby Core when the discussions are concluded.