by Ryan Whoo
Turns on flash if keyword is mentioned.
This is useful if you have groups that you mute but still notified when e.g. your name is mentioned.
When running it for the first time, enter keywords one at a time to store in keyword file.
When keyword is mentioned in message, a TTS prompt followed by camera flash will alert you. If phone is in vibrate, only camera flash will alert you.
You may want to add a sound block before the speak block to give yourself a custom notification.