Runna webserver - development server with auto reload

Usage:
  runna-webserver [options]

Options:
  -w [<working-dir>]    Working directory; defult is current.
  -h <hostname>         Hostname; default is 'localhost'.
  -p <port>             Port; default is 8000.
  -a auth               Basic auth string in 'user:pass' format; no auth by default.
  -x                    Send exit call to existing instance.
  -r                    Send reload call to existing instance.