These libraries should be added to your Arduino folder. If you just want to have a look around, you can view the ledtable library.
Download the libraries
You can download the using the git
command in the terminal.
git clone --depth 1 https://github.com/niccokunzmann/ledtable.git
cd ledtable
git submodule init
git submodule update
You can download the zip files.
ledtable-master\arduino\libraries