This software is licensed under CC BY-NC-SA which means you may use it for pretty much whatever you like except for commercial purposes.
The main RasPiO InsPiRing page is here you can find all product and purchase information there.
An extensive user guide can be found here
Full instructions on page 15 of the user guide
You will need to enable SPI on the Pi, then grab the software from GitHub
cd /home/pi
then
git clone https://github.com/raspitv/raspio-inspiring.git
Once installed, either consult the user guide or type pydoc apa
from /home/pi/raspio-inspiring
for an overview of how to use it.