update readme (#18)

* init draft

* fixup

* fix link

* remove link

* fixup

Author: geoffcline

README.md

@@ -1,10 +1,24 @@
-## amazon-network-policy-controller-k8s
+## Amazon Network Policy Controller for Kubernetes
 
 Kubernetes controller for NetworkPolicy resources for the [Amazon VPC CNI](https://github.com/aws/amazon-vpc-cni-k8s/).
 
 This controller resolves the pod addresses for the configured network policies and publishes them via the CustomResourceDefinition `policyendpoints.networking.k8s.aws` for the VPC CNI node agent to consume.
 
-## Security disclosures
+📝 EKS Customers do not need to install this controller. Review the instructions in the [EKS User Guide](https://docs.aws.amazon.com/eks/latest/userguide/cni-network-policy.html). EKS installs and manages it automatically. This controller is for self managed clusters, such as [kops](https://kops.sigs.k8s.io) clusters.
+
+## Getting Started
+
+The controller image is published to AWS ECR.
+The directory `config/default` contains a default configuration for deploying the controller. 
+
+The controller does not require any IAM policies. It does not make AWS API calls. 
+
+### Prerequisites
+
+- Kubernetes Version - 1.25+
+- Amazon VPC CNI version - 1.14.0+
+
+## Security Disclosures 
 
 If you think you’ve found a potential security issue, please do not post it in the Issues. Instead, please follow the
 instructions [here](https://aws.amazon.com/security/vulnerability-reporting/) or [email AWS security directly](mailto:[email protected]).