Add opponent shot query, update to players board.  Switch rotation to vertical images vice transforms.
Game Update

Add beginning refs, listeners, and writes for Firebase.
Refactor all ship ids to lowercase.
Move piece size into shipStatus
Add DS_Store to gitignore
Base board grid on 0 to n-1 vice 1-n
Add comments
Refactor game controller.

Move if else to switch.  Make ids shipIds.  remove row col.
Add toggle for distributed execution with firebase, and synchronous execution for test or single player.
Basic turns working, added manual player setting for testing.
Game - basic turn play implemented through Firebase

TODO: clean up turn code, use explicit switch for start
TODO: make synchronous mode work.
Hook up Firebase for turn play.
Add background, switch colors, fine tune ship positioning.