Added an icon for the project, and a README.md documentatioN.

Author: Naereen

README.md

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+# JavaScript interpreter for the NumWorks calculator
+
+[![Build](https://github.com/Naereen/A-JavaScript-interpreter-for-the-NumWorks-calculator/actions/workflows/build.yml/badge.svg)](https://github.com/Naereen/A-JavaScript-interpreter-for-the-NumWorks-calculator/actions/workflows/build.yml)
+
+This apps lets you run a [JavaScript](https://en.wikipedia.org/wiki/JavaScript) script on your [NumWorks calculator](https://www.numworks.com)!
+[![JavaScript logo](./src/icon.png)](https://en.wikipedia.org/wiki/JavaScript)
+
+## Install the app
+
+Installing is rather easy:
+
+1. Download the latest `javascript.nwa` file from the [Releases](https://github.com/Naereen/A-JavaScript-interpreter-for-the-NumWorks-calculator/releases) page ;
+2. This Release page is not-yet ready on this project, use [this folder instead](https://perso.crans.org/besson/publis/Numworks-apps/), and [this link](https://perso.crans.org/besson/publis/Numworks-apps/javascript.nwa) ;
+3. Head to [my.numworks.com/apps](https://my.numworks.com/apps) to send the `nwa` file on your calculator (on Google Chrome browser). On [this page](https://my.numworks.com/python/lilian-besson-1/javascript) you will be able to also send a default example of a JavaScript file (a tiny test script), and you can edit it yourself later on, on your calculator.
+
+## How to use the app
+
+Just launch the app, and it will read and execute your script `javascript.py`!
+
+This script should be located in the `javascript.py` file, that you can create, edit and save **from within your NumWorks!**.
+
+If you want a demo, use [this `javascript.py` script](https://my.numworks.com/python/lilian-besson-1/javascript), that you can install on your NumWorks calculator, directly from their website (from my user space).
+
+## Dependencies
+
+This programs uses the code generated by the Espruino project, a portable JavaScript interpreter for microcontrolers.
+
+## Build the app
+
+To build this sample app, you will need to install the [embedded ARM toolchain](https://developer.arm.com/Tools%20and%20Software/GNU%20Toolchain) and [nwlink](https://www.npmjs.com/package/nwlink).
+
+```shell
+brew install numworks/tap/arm-none-eabi-gcc node # Or equivalent on your OS
+npm install -g nwlink
+make clean && make build
+```
+
+----
+
+## :scroll: License ? [![GitHub license](https://img.shields.io/github/license/Naereen/A-JavaScript-interpreter-for-the-NumWorks-calculator.svg)](https://github.com/Naereen/A-JavaScript-interpreter-for-the-NumWorks-calculator/blob/master/LICENSE)
+
+[MIT Licensed](https://lbesson.mit-license.org/) (file [LICENSE](LICENSE)).
+© [Lilian Besson](https://GitHub.com/Naereen), 2025.
+
+[![Maintenance](https://img.shields.io/badge/Maintained%3F-yes-green.svg)](https://GitHub.com/Naereen/A-JavaScript-interpreter-for-the-NumWorks-calculator/graphs/commit-activity)
+[![Ask Me Anything !](https://img.shields.io/badge/Ask%20me-anything-1abc9c.svg)](https://GitHub.com/Naereen/ama)
+
+[![ForTheBadge built-with-swag](http://ForTheBadge.com/images/badges/built-with-swag.svg)](https://GitHub.com/Naereen/)
+[![ForTheBadge uses-badges](http://ForTheBadge.com/images/badges/uses-badges.svg)](http://ForTheBadge.com)
+[![ForTheBadge uses-git](http://ForTheBadge.com/images/badges/uses-git.svg)](https://GitHub.com/)
+[![ForTheBadge uses-js](http://ForTheBadge.com/images/badges/uses-js.svg)](http://ForTheBadge.com)
+