Added props code, codeRetVal and onCodeChange.
Added props code, codeRetVal and onCodeChange.

freeCodeCamp/arcade-mode,kevinnorris/arcade-mode,freeCodeCamp/arcade-mode,kevinnorris/arcade-mode,freeCodeCamp/arcade-mode,freeCodeCamp/arcade-mode,kevinnorris/arcade-mode,kevinnorris/arcade-mode