Performs the LiveReload request.

def livereload_request(self, **options):
        """
        Performs the LiveReload request.
        """
        style = color_style()
        verbosity = int(options['verbosity'])
        host = '%s:%s' % (options['livereload_host'],
                          options['livereload_port'])
        try:
            urlopen('http://%s/changed?files=.' % host)
            self.message('LiveReload request emitted.\n',
                         verbosity, style.HTTP_INFO)
        except IOError as e:
            self.stdout.write(
                self.style.WARNING('LiveReload exception: %s' % e)
            )
            pass