Design a high level interface for the guessing game BattleShip

Primary System Components: (Identified by me)

1. GameHost
2. Player
3. ScreenSpace
   {
   vector <vector< shipId>> world(m, n, default_NaN);
   }
4. Commands
   {
   PutShip, Ready, Attack, Rematch
   }
5. ShipType
   {
   S, M, L, XL
   }
6. ShipOrientation {Horizontal, Vertical}