Refactor README.md to provide clearer description of repository purpo…

…se and features

README.md

@@ -2,4 +2,13 @@
 
 AWS organization account management
 
-This repository provides resources to be deployed to accounts across the AWS organization. This is typically configuration small enough to not ned its own separate repository. This repo is primarily made up of Cloudformation StackSets that are deployed to the organization management account and deployed to organization accounts via the Cloudformation StackSet process.
+This repository provides resources in the form of CloudFormation templates for managing the ServerlessOps AWS organization and Cloudformation StackSets for providing baseline configuration to the accounts within it. This repository does not cover the entirety of account baseline configuration. Certain larger and more complex configuration, eg. GitHub Actions and Datadog integration, are managed in separate repositories.
+
+_*NOTE: This repository is not meant for general usage and is instead provided publicly as a reference for others.*_
+
+## Features
+These are features handled by this repository:
+
+* Manage AWS organization OU structure
+* Configuring top-level DNS zones
+* Configure billing alarms in all accounts