update readme

Author: runnabro

README.md

@@ -18,7 +18,7 @@ https://github.com/CodeNow/devops-scripts
 3. Change to the devops scripts repo directory and run the following command:
 `ln -s /<local-path-to-devops-scripts>/ssh/config ~/.ssh/config`
 
-4. Obtain the “Keys of Power” from someone who can already deploy (ask Anand if you don’t know). Depending on what you want to deploy you'll receive either `Test-runnable.pem`, `oregon.pem`, or both.
+4. Obtain the “Keys of Power” from someone who can already deploy (ask Anand if you don’t know). Depending on what you want to deploy you'll receive either `Test-runnable.pem`, `oregon.pem`, `delta.pem`, `delta-prime.pem` or some combination of them.
 
 5. Move the “Keys of Power” .pem  files to your `~/.ssh` directory