Added credits to Ninja, Demon's Massacre (1987)

[YangDe-shidi]

I've added some credits for Ninja, Demon's Massacre (1987).

http://hkmdb.com/db/movies/credits.mhtml?id=15780&display_set=eng

Sorry if some of them are hard to read. (I don't know whose idea it was to put white text on pale backgrounds...)