Add "assitant.rb" to do this homework

Signed-off-by: poc7667 <poc7667@gmail.com>
Mission:rescue our friend from the tedious job

Signed-off-by: poc7667 <poc7667@gmail.com>
Update

Signed-off-by: poc7667 <poc7667@gmail.com>
Add:course 8 slides

Signed-off-by: poc7667 <poc7667@gmail.com>