Added extra to readme

README.md

@@ -1,6 +1,17 @@
 # Updating requirements.txt
 pip freeze > requirements.txt
 
-# Installing required packages
+# Creating virtual environment
 python -m venv venv
-pip install -r requirements.txt
+
+# Installing required packages
+pip install -r requirements.txt
+
+# Initialize database
+flask --app app.py db init
+
+# Migrate database
+flask --app app.py db migrate
+
+# upgrade database
+flask --app app.py db upgrade