Add README documenting test.txt and other repo files

README.md

@@ -0,0 +1,35 @@
+# simple-server
+
+A simple Node.js/Express web server that demonstrates basic HTTP endpoints including GET and PATCH routes.
+
+## Installation
+
+```bash
+npm install
+```
+
+## Usage
+
+Start the server:
+
+```bash
+npm start
+```
+
+The server will run on port **7000** using `nodemon` for automatic restarts during development.
+
+## File Descriptions
+
+| File | Description |
+|------|-------------|
+| `index.js` | Main entry point. Sets up the Express application, defines the `GET /` route, and mounts the patch handler router. |
+| `patchHandler.js` | Express router module that handles `PATCH /` requests. |
+| `test.txt` | A plain text file containing the numbers 1 through 20, one per line. It is used as a sample/test file to demonstrate file serving or testing scenarios. |
+| `package.json` | Project metadata and npm scripts. |
+
+## Endpoints
+
+| Method | Path | Description |
+|--------|------|-------------|
+| `GET` | `/` | Returns `"Hello world!"` |
+| `PATCH` | `/` | Patch endpoint handled by `patchHandler.js` |