Moved 'clean.sh' to the top of the list as that makes more sense.
Moved 'clean.sh' to the top of the list as that makes more sense.

Also updated its description accordingly.

racing-tech/rrp-raspi-installer,yodaaut/raspbian-ua-netinst,beylsp/rpi-installer,FooDeas/raspberrypi-ua-netinst,matt2005/raspbian-ua-netinst,racing-tech/rrp-raspi-installer,beylsp/rpi-installer