function help(version, command = '') {
  switch (command) {
    case 'start':
      console.log();
      console.log('Usage: elm-app start [options...]');
      console.log();
      console.log('where [options...] is any number of:');
      console.log('--no-browser\tDo not open the browser automatically');
      console.log('--no-debug\tDisable the elm time travel debugger');
      console.log();
      break;
    case 'test':
      // NOTE: Current implementation calls through to `elm-test` for help message
      break;
    default:
      console.log();
      console.log('Usage: elm-app <command>');
      console.log();
      console.log('where <command> is one of:');
      console.log('    build, start, test, eject, ' + elmCommands.join(', '));
      console.log();
      console.log();
      console.log('Elm ' + elmVersion);
      console.log();
  }

  console.log(
    'create-elm-app@' + version + ' ' + path.resolve(__dirname, '..')
  );
}
Prints help message

@param  {string} version Package version
@param  {string} command Name of command for which to print help message
@return {undefined}