feat(docs): Include documentation about how to boot the app locally.

README.md

@@ -29,6 +29,17 @@ We have published a 1 hour lecture that provides a comprehensive overview of pro
 - [Notebook with code](https://github.com/dair-ai/Prompt-Engineering-Guide/blob/main/notebooks/pe-lecture.ipynb)
 - [Slides](https://github.com/dair-ai/Prompt-Engineering-Guide/blob/main/lecture/Prompt-Engineering-Lecture-Elvis.pdf)
 
+---
+## Running the guide locally
+
+To run the guide locally, for example to check the correct implementation of a new translation, you will need to:
+
+1. Install Node >=18.0.0
+1. Install `pnpm` if not present in your system. Check [here](https://pnpm.io/installation) for detailed instructions.
+1. Install the dependencies: `pnpm i next react react-dom nextra nextra-theme-docs`
+1. Boot the guide with `pnpm dev`
+2. Browse the guide at `http://localhost:3000/`
+
 ---
 
 ## Guides