Issues related to heroku-push on Windows
Use lazy evaluated ForeignKey references to prevent future problems

Starting with Django 1.7 there have been multiple people hitting #django
with problems that eventually could be solved using lazy references to
related models instead of class references. Teaching it this ways seems
to be a good way to prevent future issues.
note the difficulty of deployment chapter, fixes #139
Update README.md

Just proposing some minor and extra explanation on why the pip command may give errors on some PCs for Windows users. :)
Update README.md

just formated a lil bit the extra info I provided previously. :)
Merge pull request #157 from victorwestmann/patch-1

Update README.md
Added instructions for PostgreSQL database creation
additional change in the deploy chapter
rearanging a sentence a bit, hope it's clearer now
Updated code_editor/README.md

Atom is nowadays available pre-built for Linux too! :grinning:
Fixed Google Font URL to be protocol independent
one space too much
Merge pull request #159 from syndbg/patch-1

Updated information about Atom availability
Merge pull request #156 from iElectric/master

note the difficulty of deployment chapter, fixes #139
Merge pull request #155 from MarkusH/lazy-fk-reference

Use lazy evaluated ForeignKey references to prevent future problems
Added regex simple example.

Simple example....
Merge branch 'master' of github.com:DjangoGirls/tutorial
Typo fixes
Merge pull request #158 from goranche/master

Deployment needs a persistent database
Merge pull request #144 from andriykohut/patch-1

Fixes for heroku-push on Windows