add readme

ms-auth/README.md

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+# ms-auth
+
+Haskell client bindings to the [Microsoft Identity / Active Directory API]().
+
+[![Hackage](https://img.shields.io/hackage/v/ms-auth?style=for-the-badge)](https://hackage.haskell.org/package/ms-auth)
+
+![main](https://github.com/unfoldml/ms-graph-api/actions/workflows/haskell.yml/badge.svg?branch=main)
+
+
+## Introduction
+
+This library provides helpers for building token-based authentication flows e.g. Client Credentials (App-only) and On-Behalf-Of (Delegated), as well as for keeping tokens up to date in the background.
+
+
+## Status
+
+This library is functional but still in development.
+
+## Evolution of the library
+
+Some breaking changes might also be introduced as the library matures.
+
+We adhere to a simplified version of the [Package Versioning Policy](https://pvp.haskell.org/): breaking changes are signaled by increasing the major version number (e.g. 0.x -> 1.x ).
+
+
+## Copyright
+
+(c) 2023-, Marco Zocca, UnfoldML AB

ms-auth/ms-auth.cabal

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 name: ms-auth
-version: 0.1.0.0
+version: 0.2.0.0
 synopsis: Microsoft Authentication API
 description: Bindings to the Microsoft Identity API / Active Directory (AD) for building applications that use either Delegated or App-only permissions. Helper functions are provided for building OAuth2 authentication flows and keep tokens transactionally secure and up to date.
 homepage: https://github.com/unfoldml/ms-auth