ncdu: add link to asciinema demo of it in action
ncdu: add link to asciinema demo of it in action

ncw/rclone,ncw/rclone,seuffert/rclone,olihey/rclone,yonjah/rclone,yonjah/rclone,olihey/rclone,seuffert/rclone,B4dM4n/rclone,olihey/rclone,ncw/rclone,seuffert/rclone,yonjah/rclone,yonjah/rclone,B4dM4n/rclone,B4dM4n/rclone,seuffert/rclone,olihey/rclone,B4dM4n/rclone,ncw/rclone