update readme with quickstart

Author: mcalhoun

README.md

@@ -69,7 +69,23 @@ This function should be deployed using the
 [terraform-aws-github-action-token-rotator](https://github.com/cloudposse/terraform-aws-github-action-token-rotator.git)
 module.
 
+## Quick Start
 
+1. Browse to https://github.com/organizations/{YOUR_ORG}/settings/apps and click the New GitHub App button
+1. Set the name to "GitHub Action Token Rotator"
+1. Set the Homepage URL to `https://github.com/cloudposse/lambda-github-action-token-rotator`
+1. Uncheck the Active checkbox under the Webhook heading
+1. Select `Read and write` under Organization permissions -> Self-hosted runners
+1. Click the Create GitHub App button at the bottom of the page
+
+1. Under the `Client secrets` section, click the `Generate a new client secret` button
+1. Copy the Client secret to a safe place, it will be needed to install the app
+
+1. Under the `Private key` section, click the `Generate a private key` button
+1. Download the private key to a safe place, it will be needed to install the app
+
+1. Convert the private key to a PEM file using the following command:
+  `openssl pkcs8 -topk8 -inform PEM -outform PEM -nocrypt -in {DOWNLOADED_FILE_NAME}.pem -out private-key-pkcs8.key`
 
 
 

README.yaml

@@ -75,9 +75,22 @@ usage: |-
 #  TODO: Add examples
 
 # How to get started quickly
-#quickstart: |-
-#  Here's how to get started...
-#  TODO: update this section
+quickstart: |-
+  1. Browse to https://github.com/organizations/{YOUR_ORG}/settings/apps and click the New GitHub App button
+  1. Set the name to "GitHub Action Token Rotator"
+  1. Set the Homepage URL to `https://github.com/cloudposse/lambda-github-action-token-rotator`
+  1. Uncheck the Active checkbox under the Webhook heading
+  1. Select `Read and write` under Organization permissions -> Self-hosted runners
+  1. Click the Create GitHub App button at the bottom of the page
+
+  1. Under the `Client secrets` section, click the `Generate a new client secret` button
+  1. Copy the Client secret to a safe place, it will be needed to install the app
+
+  1. Under the `Private key` section, click the `Generate a private key` button
+  1. Download the private key to a safe place, it will be needed to install the app
+
+  1. Convert the private key to a PEM file using the following command:
+    `openssl pkcs8 -topk8 -inform PEM -outform PEM -nocrypt -in {DOWNLOADED_FILE_NAME}.pem -out private-key-pkcs8.key`
 
 # Contributors to this project
 contributors: