documentation

The documentation contains the following parts

Introduction to ssh
backup
hostname
Koha installation (the main thing).
Debian optional configurations (not required for koha)
Emacs (for those who want to learn a decent way to edit under)
koha installer screens (a bit out of date)

I will be happy for comments, corrections. Feel free to redistribute and change. I pay a beer for any mistake uncovered but you have to come as a visitor.