Added 'How to log a user in' section to docs/authetication.txt
Added 'How to log a user in' section to docs/authetication.txt

--HG--
extra : convert_revision : svn%3Abcc190cf-cafb-0310-a4f2-bffc1f526a37/django/trunk%402297

Belgabor/django,Belgabor/django,Belgabor/django