gemspec: use SPDX-compatible license specifier
commit4e1b010f8e3c9c1a1fd228c2ec29ea623c8a9f6b
authorEric Wong <e@80x24.org>
Thu, 2 Mar 2017 04:07:03 +0000 (2 04:07 +0000)
committerEric Wong <e@80x24.org>
Thu, 2 Mar 2017 20:29:40 +0000 (2 20:29 +0000)
treef0e24b3a44b182d9aeb556cadbbfb207873a692e
parent56c4eb8a98957da88ef8efd42c6e39eaf0a1b69d
gemspec: use SPDX-compatible license specifier

This makes it easier for automated checkers to check our license.
sleepy_penguin.gemspec