Update README.md
Update README.md

Added info about CSS, fixed typos
A chapter on authentication and authorization

This is a first rough version. There is room for improvement and proof-reading.
Update README.md

Few small changes
Update README.md

deleted "mysite" dir since there was directory change in the tutorial files.
Add some stuff to make it nice

 - Show the username when logged in
 - Show a "log out" link when logged in
 - Redirect to the index when logging out

and fix some typo on the way.
Proofreading
Missed a piece of code from postgresql removal
Merge pull request #64 from MarysiaLowas/master

Clearing up some unclear bits and editorial changes
Merge branch 'master' of https://github.com/shmool/tutorial into shmool-master

Conflicts:
	css/README.md
Merge pull request #65 from BluesFiend/master

Proofreading
Merge remote-tracking branch 'upstream/master'
Add venv instructions for Ubuntu 14.04

Add instructions on what to do if the virtualenv command fails on Ubuntu 14.04
Merge pull request #53 from kampfschlaefer/chapter_security_authentication_and_authorization

A chapter on authentication and authorization
Merge pull request #66 from eddie-dunn/master

Add venv instructions for Ubuntu 14.04
Made commands display consistent
Proofreading CSS and Deploy
Added note about source missing from some shells
wording, grammar, clarified some things etc. (chapter strings, ints, lists, loops etc.)
resolving a merge conflict...