Old Ubuntu Touch documentation

[libremax]

Found by "Afonso Beato" who post the link on telegram.
I relay it here in the hope that it can be useful to more people: https://phone.docs.ubuntu.com/en/

It's out-of-date but I think it's useful for anyone who wants to trace the history of UT's development.

Reminder, the current documentation is here: https://docs.ubports.com