Add regions, examples, CI (travis and tox) etc.

Some "localflavor" changes : mainly add a regions select widget and field.
you can play with in a little example app : "django_localflavor_fr_testproject".

All changes are cover with units tests and pass to flake8... and on tox and Travis CI on python 2.6, 2.7, 3.2, 3.3 and pypy.

little gift: a buildout config file and a makefile to automate repetitive tasks.
I join doc about all.

I doubt, this pull is probably a little BIG and it's possible to negotiate...

I wanted for lot of reasons : 
* ensure i can add other features (like "carte vitale" checking, SIREN/SIRET checking...)
* give some ideas to standart "localflavor" : python 2 and 3 compatibility mostly.