Join the game

[D-Gould]

A player can submit their name and a game ID and join the game.

Requirements:

• Track how many players have joined
• Track all players
• Consider what to do if game doesn't exist
• Consider if games should be closed to new players at some point

[D-Gould]

1. Add a function to Game to create a random code when a new Game is created.
2. In app.js convert games from an array to an object
3. In app.js add a new get request for room/:code.
   • Figure out how to pull code into the block
   • Figure out how to return to the index page if code doesn't match an existing one
4. Add player-screen.pug
5. Add a form to index that takes username and room code
6. Form should submit to /room/:code