chore: note that we are not accepting feedback currently (#19)

README.md

@@ -1,5 +1,7 @@
 # Terraform Provider
 
+**Note: Issues are currently closed on this repo as we are not quite ready for feedback. Thanks!**
+
 - Website: https://www.terraform.io
 - [![Gitter chat](https://badges.gitter.im/hashicorp-terraform/Lobby.png)](https://gitter.im/hashicorp-terraform/Lobby)
 - Mailing list: [Google Groups](http://groups.google.com/group/terraform-tool)