Add Quick & Dirty install guide for Ubuntu 12.04 (thanks to James Lay)
Update Auth.php

Fixed an issue when we try to install baikal on Synology NAS.
touch() function is not supported on this hardaware.

use file_put_contents () does not interfere with the logic of the code and provides better compatibility as touch() also has other problems on Windows OS

http://synology.com

http://blog.idleman.fr/installez-votre-synchronisateurs-de-contacts-chez-vous-avec-baikal/
Merge pull request #142 from torzak/master

Update Auth.php - Thanks @torzak !