add/license & readme

LICENSE

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+MIT License
+
+Copyright (c) 2020 translate-by-extension
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+<center><img src="assets/icons/tnuf.jpg" width="400" /></center>
+
+# **No Unfollow Button for Twitch**
+
+This is a Firefox extension that removes the "Unfollow" button from Twitch. It's a simple extension that does one thing, and it does it well.
+
+## Installation
+Install it in the firefox addons store: https://addons.mozilla.org/en-US/firefox/addon/xxxxxx/
+
+## Usage
+Once installed, the extension will automatically remove the "Unfollow" button from Twitch. You can still unfollow channels by going to the channel page and clicking the "Unfollow" button there.
+
+## Contributing
+If you want to contribute to this project, feel free to fork it and submit a pull request.
+
+## How to install
+1. Clone the repository
+2. Open Firefox and go to `about:debugging`
+3. Click `This Firefox`
+4. Click `Load Temporary Add-on...`
+5. Select any file in the extension's directory
+
+## License
+This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details