An example of using the service broker with a client library exists

[Geri Jennings]

Generally we assume people will use the service broker with the buildpack, which on app start auto-injects the secrets into the app environment.

We need to add an example to the README that uses a client library instead, retrieving the credentials from VCAP_SERVICES and setting up the client library to authenticate to Conjur and retrieve a secret value. For this work, please use the Java client library

[Geri Jennings]

This was completed in #129