README.md in opsworks-cli-0.3.4 vs README.md in opsworks-cli-0.3.5

- old
+ new
@@ -17,16 +17,10 @@
 The gem expects to have access to your AWS access key ID and secret access key. You can configure this in either of two ways. First, you may set the following environment variables:
 
     export AWS_ACCESS_KEY_ID=...
     export AWS_SECRET_ACCESS_KEY=...
 
-If you're on OS X, you may also use the [aws-keychain-util](https://github.com/zwily/aws-keychain-util) to password-protect these credentials within the OS X Keychain. To do this, follow the instructions in the gem's README:
-
-    gem install aws-keychain-util
-    aws-creds init
-    aws-creds add
-
-When you add credentials, make sure to name the account `default`.
+Second (the preferred option), you may use the [Omnivault](https://github.com/aptible/omnivault) gem to store and configure your credentials automatically, via your choice of password-protected vault (Apple Keychain or pws).
 
 ## Usage
 
 ```
 $ opsworks help