Add readme again

README.md

@@ -0,0 +1,7 @@
+This is a proof of concept for managing ASG 'tag' property with Sentinel, which for some reason is completely different than every other reasource.
+
+It doesn't handle multiple required keys, but neither did the original:
+https://github.com/hashicorp/terraform-sentinel-policies/blob/main/aws/check-ec2-environment-tag.sentinel
+
+Mandatory tags should probably be a map that contains a list of acceptable values. rather than a list for the sake of associating things
+ e.g., mandatory_tags = { "Environments: [prod, dev, qa]"}