Should always empty the input buffer
Should always empty the input buffer

This way input does not "stack" and causes unexpected behavior.
Also modified the valid commands to better match what the specification
describes.

walls-of-doom/walls-of-doom,mafagafogigante/walls-of-doom,walls-of-doom/walls-of-doom,walls-of-doom/walls-of-doom,walls-of-doom/walls-of-doom,mafagafogigante/walls-of-doom,mafagafogigante/walls-of-doom