improve the README

README

@@ -1,15 +1,48 @@
-Portail citoyen
-===============
+How to start
+============
 
-Une application de gestion d'identité pour les collectivités locales
+To work on portail-citoyen just execute the following lines (command
+to launch start with $, other lines are expected output)::
 
-Principales fonctionnalités
-===========================
+  $ pip install -r ./requirements
+  $ cp local_settings.py.example local_settings.py
+  $ ./portail-citoyen syncdb --all # you will be asked to create a new admin user
+  Syncing...
+  Creating tables ...
+  [ snipped ]
+  Creating table cmsplugin_a2servicelistplugin
+  Creating table registration_registrationprofile
 
- - un CMS
- - affichage d'actualité (flux RSS ou JSON)
- - affichage d'informations personelles (flux RSS ou JSON associé à une
-	 fédération d'identité)
- - service d'authentification unique et de partage d'attributs
- - gestion de liaison avec des sites tiers via le protocole SAML, CAS et/ou
-	 OpenID
+  You just installed Django's auth system, which means you don't have any superusers defined.
+  Would you like to create one now? (yes/no): yes
+  Username: admin
+  First name: admin
+  Last name: admin
+  E-mail address: admin@coin.org
+  Password: 
+  Password (again): 
+  Superuser created successfully.
+  Installing custom SQL ...
+  Installing indexes ...
+  Installed 2 object(s) from 1 fixture(s)
+
+  Synced:
+   > django.contrib.auth
+   [ snipped ]
+   > registration
+
+  Not synced (use migrations):
+   - 
+   (use ./manage.py migrate to migrate these)
+  $ ./portail-citoyen migrate --fake
+  [ lots of migrations running ]
+  $ ./portail-citoyen runserver
+  Validating models...
+
+  0 errors found
+  April 12, 2013 - 16:04:50
+  Django version 1.5.1, using settings 'compte_agglo_montpellier.settings'
+  Development server is running at http://127.0.0.1:8000/
+  Quit the server with CONTROL-C.
+
+The application is now usable at http://localhost:8000/