Update on the README file

.github/workflows/build-parser.yml

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-name: build-parser
+name: Build
 run-name: Build tree-sitter-modelica
 
 on:

README.md

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+[![build-parser](https://github.com/OpenModelica/tree-sitter-modelica/actions/workflows/build-parser.yml/badge.svg)](https://github.com/OpenModelica/tree-sitter-modelica/actions/workflows/build-parser.yml)
+
 # tree-sitter-modelica
 
-An [open-source](OSMC-License.txt) Modelica ([Modelica Language Specification v3.5](https://specification.modelica.org/maint/3.5/MLS.html)) grammar for [tree-sitter](https://github.com/tree-sitter/tree-sitter).
+An [open-source](OSMC-License.txt) Modelica
+([Modelica Language Specification v3.5](https://specification.modelica.org/maint/3.5/MLS.html))
+grammar and highlighting-query for
+[tree-sitter](https://github.com/tree-sitter/tree-sitter).
+
+## Installation
+
+```bash
+npm install
+npm run build
+```
+
+To generate the C code to parse Modelica run:
+
+```bash
+npx tree-sitter generate
+```
+
+> [!NOTE]
+> If you have ./node_modules/.bin in your `PATH` environment variable you can skip `npx`
+> ```bash
+> tree-sitter generate
+> ```
+
+## Unit Tests
+
+There is a number of tests included. To run all tests defined in [test/](./test/) just run:
+
+```bash
+npx tree-sitter test
+```
+
+### Examples
+
+To test the parser on a Modelica file run:
+
+```bash
+npx tree-sitter parse examples/SimpleMath.mo
+```
+
+## Highlighting
+
+There is also a highlighting query included.
+Make sure that the
+[tree-sitter per-user configuration](https://tree-sitter.github.io/tree-sitter/syntax-highlighting#per-user-configuration)
+are pointing to the parent directory of `tree-sitter-modelica`.
+So if this directory is in `/home/USER/workspace/tree-sitter-modelica` add
+`/home/USER/workspace` to the parser directories:
+
+**config.json**
+```json
+{
+  "parser-directories": [
+    "/home/USER/workspace"
+  ],
+}
+```
+
+To test the highlighting configure run:
+
+```bash
+npx tree-sitter highlight examples/SimpleMath.mo
+```
+
+## Current Status
 
-Currently used by [OMFrontend.js](https://github.com/OpenModelica/OMFrontend.js).
+Tree-sitter-modelica has been tested on a "Save Total" version of the DrumBoiler.mo file
+which was successfully parsed and highlighted.