Remove mention of secret, no longer used

Author: Greg Bowler

README.md

@@ -3,7 +3,7 @@ PHP client library to implement Authwave in your application
 
 Authwave is an open source Authentication-as-a-Service product that can be self-hosted. Using Authwave allows your application to offer authentication with great user experience and security, without you having to program any of the authentication yourself.
 
-To use this repository, your application must be registered to obtain a client key and secret. This can be done from https://www.authwave.com or from your own instance of [Authwave Provider](https://github.com/Authwave/provider) if you are self-hosting.
+To use this repository, your application must be registered to obtain a client key (see example below). This can be done from https://www.authwave.com or from your own instance of [Authwave Provider](https://github.com/Authwave/provider) if you are self-hosting.
 
 Basic usage
 -----------