Merge pull request #2 from hammerdr/stacked-callback

Stacked callbacks
Add account login process
Merge pull request #3 from hammerdr/account-login

Add account login process
Players have passwords
Merge pull request #4 from hammerdr/account-login

Players have passwords
Start using a builder pattern and introduce a character builder
Add rolls and a character sheet display
Merge pull request #5 from hammerdr/character-builder

Start using a builder pattern and introduce a character builder
use else instead of return
Remove unused code
Show global state
Display a simple prompt
Always display the prompt
Extract a move command
Extract Dance
Add Character, Quit, and Who commands
Rename command to commands
Add Say command
Add look command
Make it so that commands are just a single-file add.