docs: update readme

README.md

@@ -1,3 +1,15 @@
-# terraform-aws-module-template
+# terraform-route53-with-wildcard-acm-module
 
-## github template to start writing versioned terraform module
+### creates a Route53 Public Hosted Zone with Wildcard ACM Certificate validated through dns records. 
+###### For DNS validation make sure the propagation works by creating the required NS records after the HZ is created. 
+###### Otherwise the certificate will never get verified and terraform keeps hanging.  
+
+
+# Usage example:
+```terraform
+module "my_awesome_domain" {
+  source = "github.com/burib/terraform-route53-with-acm?ref=v0"
+
+  domain = local.is_prod ? "example.com" : "${var.environment}.example.com"
+}
+```