Docs: Typo fix in readme
Bug fix: Uncomment intro lines in main

Forgot to uncomment these while testing for this branch.
Upd: Moved answer time limit constant

ANSWER_TIME_MS moved to root config.py. Though strictly ui-related, it
counts as a general game setting a typical user would likely want to
change, so it will be easier to find in this module.
Docs update: Readme terms "player" vs. "team"

Readme now consistently uses "player" to refer to a participant. This is
consistent with the terminology used throughout the code.
Docs: Updated to include timeout functionality.