added promo

app/__init__.py

@@ -207,6 +207,9 @@ app.register_blueprint(stats_blueprint, url_prefix='/stats')
 from .ticket import ticket as ticket_blueprint
 app.register_blueprint(ticket_blueprint, url_prefix='/ticket')
 
+from .promo import promo as promo_blueprint
+app.register_blueprint(promo_blueprint, url_prefix='/promo')
+
 with app.app_context():
   
     db.configure_mappers()