Update README.md

README.md

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-# Web-App
+# Train Enquiry Web App for Indian Railways
+
+Currently hosted in gcloud at https://tepp-in.el.r.appspot.com
+
+## Features :
+- Shows the direct trains and **connecting trains** from Source to Destination for a given date at https://tepp-in.el.r.appspot.com/enquiry
+- Shows some interesting facts of indian railways at https://tepp-in.el.r.appspot.com/facts
+
+## Technologies :
+- [Flask](https://flask.palletsprojects.com/)
+- [SQLite](https://www.sqlite.org/)
+- [Flask-sqlalchemy](https://flask-sqlalchemy.palletsprojects.com/)
+- [requests](https://docs.python-requests.org/)
+
+## How it works :
+- Train schedule for all trains is scrapped from irctc website and stored in sqlite database. check out ./tools/generate_DB.py for the same.
+- Web app queries the database and shows the results. checkout ./main.py for the same