Add banner to README.org #5

Job	Run time
test (ubuntu-latest, 26.3, false)	30s
test (ubuntu-latest, 27.2, false)	28s
test (ubuntu-latest, 28.2, false)	37s
test (ubuntu-latest, 29.2, false)	38s
test (macos-latest, 26.3, false)	1m 48s
test (macos-latest, 27.2, false)	1m 49s
test (macos-latest, 28.2, false)	1m 48s
test (macos-latest, 29.2, false)	1m 56s
test (windows-latest, 26.3, false)	1m 56s
test (windows-latest, 27.2, false)	1m 3s
test (windows-latest, 28.2, false)	49s
test (windows-latest, 29.2, false)	41s
test (ubuntu-latest, snapshot, true)	30s
test (macos-latest, snapshot, true)	1m 35s
test (windows-latest, snapshot, true)	32s
	16m 40s

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