Unzip trenchbroom-kp-addon into youre TrenchBroom folder for example:
C:\TrenchBroom-Win32-v2019.4-Release\
Make sure folder TrenchBroom-Win32-v2019.4-Release\games\Kingpin is there


FREDZ v1.3 MDX version
mdx file preview not support

- v1.3: Seprated versions in MD2 and MDX version
	Created modelpack for md2 version
	Fixed a small type errors
	Added some character names
- v1.2: Have updated kingpin.fgd and GameConfig.cfg
- v1.1: Probably working.
- v1.0: Deathmatch only


Requirements:
Windows: XP, Vista, 7, 8, 10
Linux: GTK+ 2.6 or higher (deb and rpm packages see below)
macOS: 10.7 or higher

Trenchbroom 2019.4 or higher
