Modified constructors of Computer and PlayerCard

increment instance-counter-variables totalPlayers and totalCards
Merge branch 'mCon'

Conflicts:
	PlayerCard.java
This is my attempt at a flow of control.

There are parts that are not fleshed out; and most is from POV of Bingo
since we said that was where main would be.
Merge branch 'master' of https://github.com/Elinor78/Bingo