Create a new folder as spludo workspace. For instance:
$ mkdir spludo-workspace
$ cd spludo-workspace
You can download or clone the git repository of spludo.
No matter what way you used, you'll have the following directory structure:
spludo-workspace/
spludo/
core/ - core classes
build/ - necessary for build
spludotests/ - the test application for spludo
splud-gen - the generator application