first commit

app/extensions.py

@@ -0,0 +1,12 @@
+from flask_limiter import Limiter
+from flask_limiter.util import get_remote_address
+from flask_login import LoginManager
+from flask_migrate import Migrate
+from flask_sqlalchemy import SQLAlchemy
+
+
+db = SQLAlchemy()
+migrate = Migrate()
+login_manager = LoginManager()
+login_manager.login_view = 'auth.login'
+limiter = Limiter(key_func=get_remote_address, default_limits=['200 per day', '50 per hour'])