Source code of the processing SlideShow library.
In this file you can see the steps to install this library.
The first step is to download the source code and unzip this one where the user wants.
If you check the resource files you can see the build.properties. You have to adapt this file to the user environment, changing the paths that this file contains.
the last step is to run the compilation process via Ant, if you are using an API you have to check how to compile with Ant, you can directly run the Ant in the resources folder.
Now you can go to your processing sketchbook and check if you have the library in the libraries folder inside the sketchbook.