Added instructions in 9_Cleanup to instruct users to manually detach IAM Policy from Auth Role

Author: kylesomers

Auth/9_CleanUp/README.md

@@ -48,6 +48,16 @@
 	aws cognito-idp list-user-pools --max-results 10
 	```
 
+#### Detach CognitoIdentityPoolAuthStandardPolicy IAM Policy
+
+1. Before you delete the backend stack, you will need to remove the IAM Policy that you manually attached to the **Auth** role.
+
+	Navigate to the Identity and Access Management (IAM) Console and search for the **Auth** role and click into it.
+
+	![Find Auth Role](../images/iam-cleanup-findAuthRole.png)
+	
+2. On the Role Summary page, find the policy named **WildRydesAPI-StandardUserPolicy** in the Permissions tab. Once you locate the policy, click the **X** to remove this policy from the IAM Role. A popup window will ask you to confirm that you want to remove it - click the red **Detach** button.
+
 #### Remove WildRydes Backend
 
 1. Next, you will need to remove the *CloudFormation stack* for the API. This stack should be named **WildRydesBackend**. Once again, from the your terminal window, run: