Notes about requirements for running this branch

Author: topfunky

README.md

@@ -2,12 +2,17 @@
 
 Before and after code for a _Terraform Introduction_ class.
 
-## Bare AWS
+## Terraform Enterprise
 
-This branch is for use on a student's own AWS account and doesn't assume that the code is running inside the HashiCorp training VPC.
+This branch is for use with a student's own AWS credentials and is intended to run on Terraform Enterprise (but can also run locally).
 
 Major changes:
 
 - A security group is created for SSH and HTTP
-- The configuration only uses resources built by the configuration itself 
+- The configuration only uses resources built by the configuration itself
+- `public_key` and `private_key` should be provided as contents rather than a path to a file.
+- AWS credentials should be provided as environment variables.
 
+    export AWS_ACCESS_KEY_ID="AAAA"
+    export AWS_SECRET_ACCESS_KEY="AAAA"
+    export AWS_DEFAULT_REGION="us-west-2"