TODO

• Player hits button to sign up
• Player hits button to join a game
• Adds player to /waitingToPlay and /scores with initial 0 score
• Function triggers on /waitingToPlay create
• Function assigns two users to a new game /gameinProgress/ deletes them from /waitingToPlay keys
• Users move is set to "pending" in /gamesInProgress//
• When /gamesInProgress/ is updated, function checks that both users have played a move and if so sets "winner" to "true" or "false" for each player
• Function updates score for winner
• Player hits button to join a game...
• Old games deleted after 10 mins?

Deploy all functions:

firebase deploy --only functions

Or a single function:

firebase deploy --only functions:<functionName>