Simple generic IIC demo

This demo allows you to read and write data to the IIC of the IO-Warrior.
It uses the first IO-Warrior found.
It handles the activation of the IIC mode and the correct ReportIDs for you.
Furthermore it reads the ACK reports of the IO-Warrior for write operations
and shows any errors encountered.
Nice for IIC experiments with new chips.

IOWarrior 56 not supported.