Just experiments for Raspberry pi
clone repository: $ git clone https://github.com/sumotoy/WebIOPi.git
go to folder: $ cd WebIOPi
now compile: $ sudo sh setup.sh
..will take some time to complete..
start WebIOPi in background: $ sudo /etc/init.d/webiopi start
start WebIOPi at boot: $ sudo update-rc.d webiopi defaults