docs: def start(self):
          "Start the project on the directory"
          bookname = self.args.get('--bookname', None)
          if not bookname:
              bookname = 'book.md'
          project_dir = self.args.get('<name>', None)
          if not project_dir:
              project_dir = join(self.cwd, 'Book')
          project_dir = abspath(project_dir)
  
          # create the working dir?
          if not exists(project_dir) or self.args['--overwrite']:
              if exists(project_dir):
                  if yesno(warning(
                          'Are you sure you want to remove `%s`? '
                          % project_dir)):
                      shutil.rmtree(project_dir)
                  else:
                      sys.exit(error('Operation aborted'))
              os.makedirs(project_dir)
              os.makedirs(join(project_dir, 'build'))
              with codecs.open(
                      join(project_dir, bookname), 'w', encoding="utf") as fd:
                  fd.write('''# This is your book
      You can start it right now and publish it away!
      ''')
          # What shall we do with the configuration file?
          config_file = join(project_dir, 'book.json')
          rewrite_config_file = True
          if exists(config_file) and not self.args['--overwrite']:
              print('A config file already exists. This step is skipped')
              rewrite_config_file = False
  
          if rewrite_config_file:
              with codecs.open(config_file, 'w', encoding="utf") as fd:
                  data = {
                      'files': ['%s' % bookname],
                      'author': "%s" % ask("What is your name? "),
                      'title': '%s' % ask("E-book title, please? "),
                  }
                  data['fileroot'] = unidecode(data['title']).lower() \
                      .replace(' ', '-')
                  # pick a generator
                  if len(self.generators) == 1:
                      data['generator'] = self.generators[0]
                  else:
                      picked_generator = None
                      while not picked_generator:
                          picked_generator = ask(
                              "Which generator? [%s] "
                              % ', '.join(self.generators)
                          )
                          if picked_generator not in self.generators:
                              print warning(
                                  'Wrong answer. Please pick one on the list')
                              picked_generator = None
                      # fine, we have one.
                      data['generator'] = picked_generator
                  json.dump(data, fd, indent=4, encoding="utf")
  
          # Game over
          print
          sys.exit(
              success('Now you can go to `%s` and start editing your book...'
                      % project_dir))