code: public static KickflipApiClient setup(Context context, String key, String secret) {
          return setup(context, key, secret, null);
      }
docs: Register with Kickflip, creating a new user identity per app installation.
  
  @param context the host application's {@link android.content.Context}
  @param key     your Kickflip Client Key
  @param secret  your Kickflip Client Secret
  @return a {@link io.kickflip.sdk.api.KickflipApiClient} used to perform actions on behalf of a
  {@link io.kickflip.sdk.api.json.User}.