Add missing quotation

Fixes error "invalid key/value pair in file /etc/udev/rules.d/95-keymap-apple-kdb.rules on line 15,starting at character 1 ('N')" in log files
Support swapping 'Alt' and 'Cmd' keys to emulate PC keyboard layout
Create .gitignore and update copyright info
Emulate PC keys (Print, Scroll Lock, Pause) also in virtual console