anchor.diff:  
           player_id was invalid for the provided game_
   
  ++ Response 402 (text/plain)
  +
  +        showdown is in progress, please wait until game `status` is `ready`
  +
   + Response 403 (text/plain)
   
           player_id does not have the selected card
positive.code: Make a move or check the current game state
  
  ### Show your Hand [GET]
  Get the current hand for a specified player and game
  
  + Parameters
      + game_id (required, number) - unique ID for the game
  
negative.code: + Response 200 (application/json)
  
          { 
              "game_id": "42",
              "status" : "waiting"
              "choice" : "2"
              "hand" : {
                  "player_id" : '31337' 
                  "cards": [ {value: '2', suit:'diamonds'}]
  