update contribution instructions in readme

README.md

@@ -2,7 +2,7 @@
 
 Unofficial re-design of the [Proxmox helper script website](https://tteck.github.io/Proxmox/)
 
-feel free to fork the project. or post feedback in the [Discussion tab](https://github.com/BramSuurdje/proxmox-helper-scripts/discussions). your feedback is always welcomed since we're all learing. 
+feel free to fork the project. or post feedback in the [Discussion tab](https://github.com/BramSuurdje/proxmox-helper-scripts/discussions). your feedback is always welcomed since we're all learing.
 
 ## Todo
 
@@ -11,4 +11,32 @@ feel free to fork the project. or post feedback in the [Discussion tab](https://
   - [ ] Add modern landing page.
   - [ ] Add links for videos mentioning the script
   - [ ] Add links for socials. e.g. discord etc
-- [ ] FIX: fix drop downs not opening when searching
+- [ ] FIX: fix drop downs not opening when searching
+
+## How to contribute
+
+First, install the dependencies:
+
+```bash
+npm install
+# or 
+yarn install
+# or
+pnpm install
+# or
+bun install
+```
+
+Then, run the development server:
+
+```bash
+npm run dev
+# or
+yarn dev
+# or
+pnpm dev
+# or
+bun dev
+```
+
+Open [http://localhost:3000](http://localhost:3000) with your browser to see the result.