Add Short Sword by William Thompson

[Gaurav0]

http://opengameart.org/content/lpc-short-sword

[makrohn]

In all honesty, the sword twists all wrong as it swings. I'm really happy with most of the stuff he's done, but I'm not sure I want to include those animations.

[jrconway3]

The knife animations are just as bad. Might be a good idea to fix both. These sword animations are basically just the dagger but a bit longer.

[jrconway3]

Reading through the comments, not even the original artist is fond of how it looks. I'll take a look at it later if need be, but right now its low on my priority list.