Initial commit

Rock paper scissors, does a single iteration of a rock paper scissors
game. Displays the computer's move and the winner of the game.
I think this is doing this:

```
if computer_move.match(player_move) { |m| tie_no_winner }
else
  # ...
end
```

There's no code in the body of the `if` statement. I'd remove the braces, or we can have a quick 10-second chat about exactly what this is trying to do.