anchor.diff:  
   - Create a Player account and join a Game
   
  -- Choose to `pursue`, `retreat` or `showdown` in each round against McCree
  +- Choose an action: `pursue`, `retreat` or `showdown` in each round against McCree
   
  -- McCree will make his own choice and compare it against yours
  +- McCree takes his action *after* yours
   
  -- After each round McCree takes damage or gains progress towards High Noon
  +- Based on your choices, McCree will take damage or gain progress towards High Noon
   
  -> McCree starts with 200 health and takes between `20 to 70` damage per successful attack
  +> McCree starts with 200 health and takes between `20 to 50` damage per successful attack
   
   ## The Choice
   
  
positive.code: + Request (application/json)
  
          {
              "player_id":"31337",
              "rival_id": "8989"
          }
  
  + Response 200 (application/json)
  
          { 
              "game_id": '42',
              "player_id" : '31337',
               "hand" : {
                  "player_id" : '31337' 
                  "cards": [ {value: '2', suit:'diamonds'}]
          }
  
  + Response 400 (text/plain)
  
negative.code: 
          { 
              "game_id": '42',
              "player_id" : '31337'
          }
  
  + Response 400 (text/plain)
  