Renamed home theater playback method to reflect Sonos' updated name

Author: nightowlengineer

src/main/java/engineer/nightowl/sonos/api/resource/HomeTheaterResource.java

@@ -36,7 +36,7 @@ public HomeTheaterResource(final SonosApiClient apiClient)
      * @throws engineer.nightowl.sonos.api.exception.SonosApiClientException if an error occurs during the call
      * @throws engineer.nightowl.sonos.api.exception.SonosApiError if there is an error from the API
      */
-    public SonosSuccess loadHomeTheater(final String clientToken, final String playerId) throws SonosApiClientException, SonosApiError
+    public SonosSuccess loadHomeTheaterPlayback(final String clientToken, final String playerId) throws SonosApiClientException, SonosApiError
     {
         return postToApi(SonosSuccess.class, clientToken, String.format("/v1/players/%s/homeTheater", playerId));
     }