A new option :dash for Shoes

This is trivial. But I've learned the way to add a new function into Policeman! :-D

Look at:
- the online demo
- the new chapter 00545, Shoes Tutorila Note
- the commit on GitHub

# sample77.png

If you have time, please download Shoes-0.r1375.exe or build my latest Shoes by yourself and confirm the :dash option. ;-)

Cheers,
ashbb