* -e caused the script to stop at [[ "$ret" -ne 0 ]] && log err "$* - returned $ret - $error" - easier to remove it and avoid the script exiting due to something returning a non zero status.
* add a new mount.d script to allow mounting of a usb stick directly over ~/RetroPie
* script will check for existance of a retropie-mount folder in the root. If it exists and is empty, the existing ~/RetroPie folder will be copied to it. Then it will be mounted.