Bugfix: Using FileGpioConnectionDriver as non-root user
The system needs some time in order to set the file permissions in /sys/class/gpio.
Merge remote-tracking branch 'upstream/master'
Bugfix: Using FileGpioConnectionDriver as non-root user

"SetPinDirection": use full file path to GPIO pin value.
Merge pull request #17 from danm-de/master

Bugfix: Using FileGpioConnectionDriver as non-root user