Update README.md

README.md

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 # msal-flask-graph
-Python Flask App utilizing MSAL, Microsoft Graph 
+Python Flask App utilizing Microsoft Authentication Library (MSAL), Microsoft Azure Active Directory and Microsoft Graph
+
+This code accompanies articles written by Mel Hall in which we create a Flask Web App.
+
+Authentication code is based on https://github.com/Azure-Samples/ms-identity-python-webapp
+
+The app asks a user to log in using MSAL for authentication to request a token for accessing the Microsoft Graph API (a unified API for accessing all things Microsoft 365).
+We shall make several API calls, retrieving our profile information, OneNote pages and create a Incident Management Bot which can create and manage Teams Channels. 
+
+In addition our app will provide functionality to download our OneNote pages as Markdown.
+
+
+## Instructions for Use
+
+- Clone the repo.
+- Complete the `app_config.py` section. Setup will involve app configuration on Azure Active Directory. Detailed instructions will appear on the article.
+- `$ flask run --host=localhost --port=5000`