Add description of terraform-aws-proxy to readme (#49)

Signed-off-by: Jim Enright <[email protected]>

README.md

@@ -10,7 +10,8 @@ This repository contains a number of Terraform modules for creation of the pre-r
 | [terraform-cdp-azure-prereqs](modules/terraform-cdp-azure-pre-reqs/README.md) | For all Azure pre-requisite Cloud resources |
 | [terraform-cdp-deploy](modules/terraform-cdp-deploy/README.md) | For deployment of CDP on Azure or AWS. |
 | [terraform-aws-vpc](modules/terraform-aws-vpc/README.md) | Module for creation of the VPC networking resources on AWS suitable. Can be used to create the CDP VPC and Subnets. Note that this module is called from the terraform-cdp-aws-prereqs module. |
-| [terraform-aws-tgw](modules/terraform-aws-tgw/README.md) | Module for creation creation of AWS Transity Gateway (TGW) and attaching a specified list of VPCs via the TGW. This module can be used to assist in deploying Cloudera Data Platform (CDP) Public Cloud in a fully private networking configuration where a CDP VPC and Networking VPC are connected using the Transit Gateway. |
+| [terraform-aws-tgw](modules/terraform-aws-tgw/README.md) | Module for creation of AWS Transity Gateway (TGW) and attaching a specified list of VPCs via the TGW. This module can be used to assist in deploying Cloudera Data Platform (CDP) Public Cloud in a fully private networking configuration where a CDP VPC and Networking VPC are connected using the Transit Gateway. |
+| [terraform-aws-proxy](modules/terraform-aws-proxy/README.md) | Module to create and configure and EC2 Auto-Scaling Group for a highly available Squid Proxy service with Network Load Balancer (NLB) to forward traffic to the proxy instances. This module can be used to assist in deploying Cloudera Data Platform (CDP) Public Cloud in a fully private networking configuration where a the CDP Environments uses a proxy config via the NLB. |
 | [terraform-azure-nfs](modules/terraform-azure-nfs/README.md) | Module for creation of Azure NFS File Share required for Cloudera Machine Learning (CML) Public Cloud. Also optionally creates a Virtual Machine which can be used to mount and set the required ownership for CML workspace's projects folder.|
 
 Each module contains Terraform resource configuration and example variable definition files.