Add project README file.

Author: Potherca

README.md

@@ -0,0 +1,98 @@
+**@FIXME:** 
+
+- [ ] Generate a changelog
+      `github_changelog_generator -u pdsinterop -p {{project-slug}}`
+
+# Solid Auth
+
+[![Project stage: Development][project-stage-badge: Development]][project-stage-page]
+[![License][license-shield]][license-link]
+[![Latest Version][version-shield]][version-link]
+![Maintained][maintained-shield]
+
+[![PDS Interop][pdsinterop-shield]][pdsinterop-site]
+[![standard-readme compliant][standard-readme-shield]][standard-readme-link]
+[![keep-a-changelog compliant][keep-a-changelog-shield]][keep-a-changelog-link]
+
+_OAuth2, OpenID and OIDC for Solid Server implementations_
+
+This project contains a glue layer to `league/oauth2-server` and custom code to
+provide responses to all authentication and authorization requests made to a 
+Solid Server that require OAuth2, OpenID Connect, or meta-data for either.
+
+## Table of Contents
+
+<!-- toc -->
+
+- [Installation](#installation)
+- [Usage](#usage)
+- [API](#api)
+- [Contribute](#contribute)
+- [License](#license)
+
+<!-- tocstop -->
+
+## Installation
+
+The advised install method is through composer:
+
+```
+composer require pdsinterop/solid-auth
+```
+
+PHP version 7.2 and higher is supported. The [`mbstring`](https://www.php.net/manual/en/book.mbstring.php)
+and [`json`](https://www.php.net/manual/en/book.json.php) extensions need to be 
+enabled in order for this package to work.
+
+## Usage
+
+The functionality provided by this package is exposed mostly through these classes:
+
+    @TODO: Add required code block illustrating how to use
+
+- @TODO: List main classes
+
+See the "API" section for detailed usage examples.
+
+## API
+
+    @TODO: List API per class
+
+## Contribute
+
+Questions or feedback can be given by [opening an issue on GitHub][issues-link].
+
+All PDS Interop projects are open source and community-friendly.
+Any contribution is welcome!
+For more details read the [contribution guidelines][contributing-link].
+
+All PDS Interop projects adhere to [the Code Manifesto](http://codemanifesto.com)
+as its [code-of-conduct][code-of-conduct]. Contributors are expected to abide by its terms.
+
+There is [a list of all contributors on GitHub][contributors-page].
+
+For a list of changes see the [CHANGELOG][changelog] or [the GitHub releases page][releases-page].
+
+## License
+
+All code created by PDS Interop is licensed under the [MIT License][license-link].
+
+[changelog]: CHANGELOG.md
+[code-of-conduct]: CODE_OF_CONDUCT.md
+[contributing-link]: CONTRIBUTING.md
+[contributors-page]: https://github.com/pdsinterop/php-solid-auth/contributors
+[issues-link]: https://github.com/pdsinterop/php-solid-auth/issues
+[releases-page]: https://github.com/pdsinterop/php-solid-auth/releases
+[keep-a-changelog-link]: https://keepachangelog.com/
+[keep-a-changelog-shield]: https://img.shields.io/badge/Keep%20a%20Changelog-f15d30.svg?logo=data%3Aimage%2Fsvg%2Bxml%3Bbase64%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
+[license-link]: ./LICENSE
+[license-shield]: https://img.shields.io/github/license/pdsinterop/php-solid-auth.svg
+[maintained-shield]: https://img.shields.io/maintenance/yes/2020.svg
+[pdsinterop-shield]: https://img.shields.io/badge/-PDS%20Interop-gray.svg?logo=data%3Aimage%2Fsvg%2Bxml%3Bbase64%2CPHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZpZXdCb3g9Ii01IC01IDExMCAxMTAiIGZpbGw9IiNGRkYiIHN0cm9rZS13aWR0aD0iMCI+CiAgICA8cGF0aCBkPSJNLTEgNTJoMTdhMzcuNSAzNC41IDAgMDAyNS41IDMxLjE1di0xMy43NWEyMC43NSAyMSAwIDAxOC41LTQwLjI1IDIwLjc1IDIxIDAgMDE4LjUgNDAuMjV2MTMuNzVhMzcgMzQuNSAwIDAwMjUuNS0zMS4xNWgxN2EyMiAyMS4xNSAwIDAxLTEwMiAweiIvPgogICAgPHBhdGggZD0iTSAxMDEgNDhhMi43NyAyLjY3IDAgMDAtMTAyIDBoIDE3YTIuOTcgMi44IDAgMDE2OCAweiIvPgo8L3N2Zz4K
+[pdsinterop-site]: https://pdsinterop.org/
+[project-stage-badge: Development]: https://img.shields.io/badge/Project%20Stage-Development-yellowgreen.svg
+[project-stage-page]: https://blog.pother.ca/project-stages/
+[standard-readme-link]: https://github.com/RichardLitt/standard-readme
+[standard-readme-shield]: https://img.shields.io/badge/-Standard%20Readme-brightgreen.svg
+[version-link]: https://packagist.org/packages/pdsinterop/php-solid-auth
+[version-shield]: https://img.shields.io/github/v/release/pdsinterop/php-solid-auth.svg?sort=semver