Added note about sound.
Added note about sound.

BrilliantChemistry/NotifyOn,BrilliantChemistry/NotifyOn,digerata/NotifyOn,digerata/notify,digerata/notify,digerata/notify,BrilliantChemistry/NotifyOn,digerata/NotifyOn,digerata/NotifyOn,BrilliantChemistry/NotifyOn