added getInstance, updateUI and killAllSerialTasks methods
added getInstance, updateUI and killAllSerialTasks methods

PatMartin/Dex,PatMartin/Dex,PatMartin/Dex,PatMartin/Dex,PatMartin/Dex,PatMartin/Dex,PatMartin/Dex,PatMartin/Dex,PatMartin/Dex