Tests

Update readme to point to CONTRIBUTE.md file #126

Job	Run time
Ruby: 3.2, Rails: 7.0, Channel: stable	57s
Ruby: 3.1, Rails: 6.1, Channel: stable	53s
Ruby: 3.3, Rails: 7.2, Channel: stable	1m 2s
Ruby: 3.3, Rails: 7.1, Channel: stable	1m 0s
Ruby: 3.1, Rails: 7.0, Channel: stable	50s
Ruby: 3.2, Rails: 7.2, Channel: stable	53s
Ruby: 3.2, Rails: 7.1, Channel: stable	56s
Ruby: ruby-head, Rails: 7.2, Channel: experimental	51s
Ruby: 3.1, Rails: 7.2, Channel: stable	55s
Ruby: ruby-head, Rails: 7.1, Channel: experimental	43s
Ruby: 3.3, Rails: edge, Channel: experimental	1m 6s
Ruby: 3.1, Rails: 7.1, Channel: stable	49s
Ruby: ruby-head, Rails: edge, Channel: experimental	51s
Ruby: 3.1, Rails: edge, Channel: experimental	43s
Ruby: 3.2, Rails: edge, Channel: experimental	53s
	13m 22s

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