test

[DOC] Extract description from README #478

Job	Run time
ruby-versions / Generate Ruby versions	2s
build (2.5 / ubuntu-latest)	21s
build (2.5 / windows-latest)	3m 22s
build (2.6 / ubuntu-latest)	21s
build (2.6 / macos-latest)	29s
build (2.6 / windows-latest)	3m 5s
build (2.7 / ubuntu-latest)	23s
build (2.7 / macos-latest)	29s
build (2.7 / windows-latest)	1m 56s
build (3.0 / ubuntu-latest)	8s
build (3.0 / macos-latest)	7s
build (3.0 / windows-latest)	54s
build (3.1 / ubuntu-latest)	6s
build (3.1 / macos-latest)	8s
build (3.1 / windows-latest)	39s
build (3.2 / ubuntu-latest)	8s
build (3.2 / macos-latest)	8s
build (3.2 / windows-latest)	2m 10s
build (3.3 / ubuntu-latest)	7s
build (3.3 / macos-latest)	6s
build (3.3 / windows-latest)	1m 5s
build (3.4 / ubuntu-latest)	7s
build (3.4 / macos-latest)	13s
build (3.4 / windows-latest)	1m 22s
build (head / ubuntu-latest)	6s
build (head / macos-latest)	9s
build (head / windows-latest)	53s
build (jruby / ubuntu-latest)	28s
build (jruby / macos-latest)	17s
build (jruby-head / ubuntu-latest)	27s
build (jruby-head / macos-latest)	34s
build (truffleruby / ubuntu-latest)	14s
build (truffleruby / macos-latest)	18s
build (truffleruby-head / ubuntu-latest)	17s
build (truffleruby-head / macos-latest)	14s
	21m 53s

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