Usage:
  serves [entry.js] [opts]
  
Options:
  --title, -t    HTML title
  --root, -r     root directory for static files (default cwd)
  --port, -p     base port to attempt (default 8080)
  --host, -h     host name (default localhost)
  --css, -s      optional path to a CSS file
  --index, -i    HTML file to serve as index.html