Update README.md

Author: cthacker-udel

README.md

@@ -27,6 +27,8 @@ You can view the progress towards the completion of the Project [here](https://g
 
 Create an instance of `SpotifyClient` by calling the constructors listed in this [file](https://github.com/cthacker-udel/Java-Spotify-API/blob/master/src/main/java/Client/SpotifyClient.java)
 
+When you create an instance of `SpotifyClient` using the constructors listed above, you can utilize the methods listed in SpotifyRestAPI listed in this [file](https://github.com/cthacker-udel/Java-Spotify-API/blob/master/src/main/java/Client/SpotifyRestAPI.java)
+
 ### **Examples**
 
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