Add mock Twitter data

[mknepprath]

Will want the ability to go through bout flow - but eventually, we need to be able to handle actual Twitter data. When hitting a button, we know an attack/move is correctly directed and valid - when dealing with tweets, we'll need to make sure the tweet is valid (or even intended to be a move within bout).

[mknepprath]

When implementing this, many cases should be tested...

• a valid move
• a valid move, but not their turn
• invalid move, no hashtag present
• invalid move, hashtag present, but not one of your moves
• valid move, multiple hashtags - should only use the first one probably?
• invalid move, other player not mentioned
• invalid move, @bout_bot not mentioned (may be a non-issue, since @bout_bot wouldn't even register this tweet)