Improve Error handling, Add LED feedback, fix bugs (#1)

Updated README.md

Update README.md

Fixed IFFTKEY typo

updated reference path to pngs

Delete two.png

Delete three.png

Delete scissors.png

Delete rock.png

Delete paper.png

Delete one.png

adding Rock, Paper, Scissors assets

adding one, two, three pngs

Adding rock, paper, scissors pngs

updates to rock paper scissors