The goal of this program is to show a smiley and plays a happy sound when pressing A, and a frowney animation and unhappy sound when B is pressed.
- when
press 
button A, do 
show image smiley.
- when press button A, do
play sound emoji 
happy.
- when press
button B, do show image frowney.
- when press button A, do play sound emoji
sad.
improvement ideas
- add more feelings with other buttons and sensors