guided lvm encrypted partitioning on debian 8.1

[Patryk Hanckowiak <pathanck@gmail.com>]

PS Regarding my previous bug report: for people considering installation 
(using guided lvm encrypted partitioning on Debian 8.1), I would 
recommend to choose options:
1) Everything on one partition;
or
2) separate /home;
if the third option (separate /var, /tmp, /home) does not include /usr 
in the list of partitions. Otherwise /usr will be written to /, which is 
not good, if you are using Debian for general purpose desktop use.

Regards