This is a fork (and conversion to git) from https://bitbucket.org/settlersdev/s5hook/src/default/ (bitbucket dropped hg support)
S5Hook is a extension for Settlers 5 which can be loaded at runtime through the Lua script embedded in a usermap.
Include the code from output/S5Hook.lua in your map and execute InstallS5Hook(). Starting from v1.0 the setup take place instantly - but check the return value to catch older patch versions.
Simply execute the build.bat to build the source code into a ready-to-use Lua script.