Usage: FictionTool.py [OPTIONS]
   A tool helps you download fictions from https://www.biquge.com.cn
   to local environment or send to designated email receiver.

Options:
  --version             show program's version number and exit
  -h, --help            show this help message and exit
  -d DOWNLOADBOOK       Search for a book and return the first result in the
                        list.
  -n LASTNCHAPTER       Download the last N chapters
  -r RECEIVER           Set receiver email address
  -u FICTIONURL, --url=FICTIONURL
                        Set download URL