Merge pull request #257 from trussworks/barry-update-readme

chore: deprecating the module

Author: rpdelaney

README.md

@@ -1,4 +1,8 @@
-Creates an ECS cluster backed by an AutoScaling Group.
+# DEPRECIATION NOTICE
+ 
+This module has been deprecated and is no longer maintained. Should you need to continue to use it, please fork the repository. Thank you.
+ 
+ Creates an ECS cluster backed by an AutoScaling Group.
 
 The cluster is minimally configured and expects any ECS service added will
 use `awsvpc` networking and Task IAM Roles for access control.