# File lib/t/set.rb, line 18
    def active(screen_name, consumer_key=nil)
      screen_name = screen_name.strip_ats
      @rcfile.path = options['profile'] if options['profile']
      consumer_key = @rcfile[screen_name].keys.last if consumer_key.nil?
      @rcfile.active_profile = {'username' => screen_name, 'consumer_key' => consumer_key}
      say "Active account has been updated."
    end