// Use this for initialization
 void Start()
 {
     Debug.Log("Difficulty: " + PlayerPrefsWrapper.GetDifficulty());
     Debug.Log("Master Volume: " + PlayerPrefsWrapper.GetMasterVolumeOrDefault(0.8f));
 }
 public void LoadFromPersistence()
 {
     volumeSlider.value     = PlayerPrefsWrapper.GetMasterVolumeOrDefault(0.8f);
     difficultySlider.value = PlayerPrefsWrapper.GetDifficulty();
     Debug.Log("Loaded options from persistence.  Vol: " + PlayerPrefsWrapper.GetMasterVolumeOrDefault(0.8f));
 }