README: create README file

This commit also updates the LICENSE file.

LICENSE

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 MIT License
 
-Copyright (c) 2021 Afshin Arani
+Copyright (c) 2021-2023 Afshin Arani
+Copyright (c) 2021-2023 NodeEffect Ltd (nodeffect.com)
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

README.md

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+NOnion
+-------------------------------
+[![Build Status](https://github.com/nblockchain/NOnion/actions/workflows/CI.yml/badge.svg?branch=master&event=push)](https://github.com/nblockchain/NOnion/actions/workflows/CI.yml)
+
+_Unofficial_ work in progress .NET TOR client library (implemented in F#)
+
+- [How do I add this to my project?](#how-do-i-add-this-to-my-project)
+- [Contributing](#contributing)
+- [Contributors](https://github.com/nblockchain/NOnion/graphs/contributors)
+- [License](https://github.com/nblockchain/NOnion/blob/master/LICENSE)
+
+# How do I add this to my project?
+
+Install via NuGet:
+
+## .NET CLI
+```
+> dotnet add package NOnion
+```
+
+## VS Package Manager
+```
+> Install-Package NOnion
+```
+
+# Contributing
+
+Don't underestimate the power of your contribution - even a small pull request can make a big difference in a small project, so submit yours today!