diff --git a/.gitignore b/.gitignore
index b034990..6eafef1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 budget/budget.db
 budget/memory
+budget/settings.py
 *.pyc
diff --git a/README.rst b/README.rst
index 9b72a0c..6674096 100644
--- a/README.rst
+++ b/README.rst
@@ -12,10 +12,17 @@ To make it run, you just have to do something like::
 
     $ virtualenv venv
     $ source venv/bin/activate
-    $ pip install -r requirements.txt
+    $ pip install -r budget/requirements.txt
     $ cd budget
     $ python run.py
 
+It is also better to actually turn the debugging mode on when you're
+developing. You can create a `settings.py` file in the `budget` directory, with
+the following content::
+
+    DEBUG = True
+    SQLACHEMY_ECHO = DEBUG
+
 Deploy it
 =========
 
@@ -33,6 +40,9 @@ To deploy it, I'm using gunicorn and supervisord::
 
 Don't forget to set the right permission for your files !
 
+Also, create a `settings.py` file with the appropriate values if you need to
+use a different database for instance.
+
 How to contribute
 =================
 
diff --git a/budget/default_settings.py b/budget/default_settings.py
index ff61010..111abf2 100644
--- a/budget/default_settings.py
+++ b/budget/default_settings.py
@@ -1,6 +1,11 @@
-DEBUG = True
+DEBUG = False
 SQLALCHEMY_DATABASE_URI = 'sqlite:///budget.db'
 SQLACHEMY_ECHO = DEBUG
 SECRET_KEY = "tralala"
 
 DEFAULT_MAIL_SENDER = ("Budget manager", "budget@notmyidea.org")
+
+try:
+    from settings import *
+except ImportError:
+    pass
diff --git a/budget/models.py b/budget/models.py
index 9d93d2f..f84194e 100644
--- a/budget/models.py
+++ b/budget/models.py
@@ -92,7 +92,7 @@ class Person(db.Model):
     _to_serialize = ("id", "name", "activated")
 
     id = db.Column(db.Integer, primary_key=True)
-    project_id = db.Column(db.Integer, db.ForeignKey("project.id"))
+    project_id = db.Column(db.String, db.ForeignKey("project.id"))
     bills = db.relationship("Bill", backref="payer")
 
     name = db.Column(db.UnicodeText)
@@ -163,7 +163,7 @@ class Bill(db.Model):
 
 class Archive(db.Model):
     id = db.Column(db.Integer, primary_key=True)
-    project_id = db.Column(db.Integer, db.ForeignKey("project.id"))
+    project_id = db.Column(db.String, db.ForeignKey("project.id"))
     name = db.Column(db.UnicodeText)
 
     @property
diff --git a/budget/run.py b/budget/run.py
index e1711a7..39b297e 100644
--- a/budget/run.py
+++ b/budget/run.py
@@ -1,10 +1,12 @@
 from web import main, db, mail
 from api import api
+import os
 
 from flask import *
 
 app = Flask(__name__)
 app.config.from_object("default_settings")
+
 app.register_blueprint(main)
 app.register_blueprint(api)
 
diff --git a/requirements.txt b/requirements.txt
deleted file mode 100644
index e254ef4..0000000
--- a/requirements.txt
+++ /dev/null
@@ -1,4 +0,0 @@
-flask
-flask-wtf
-flask-sqlalchemy
-flask-mail