Work in progress, skeleton of the api created and testing started. Need to fix authentication tests.

app/dao/users_dao.py

@@ -0,0 +1,20 @@
+from datetime import datetime
+
+from sqlalchemy.orm import load_only
+
+from app import db
+from app.models import User
+
+
+def create_user(email_address):
+    user = User(email_address=email_address,
+                created_at=datetime.now())
+    db.session.add(user)
+    db.session.commit()
+    return user.id
+
+
+def get_users(user_id=None):
+    if user_id:
+        return User.query.filter_by(id=user_id).one()
+    return User.query.filter_by().all()