Add dev instructions

README.md

@@ -4,8 +4,19 @@ A procedural city generator for Minecraft as part of the GDMC 2024 competition.
 # Run
 
 Install required packages using `pip`:
-```python
+```bash
 pip install -r requirements.txt
 ```
 
-Run `main.py`.
+Run `main.py`.
+
+# Dev 
+
+First, setup your virtual environment using Python's built-in venv.
+
+Install `pipreqs`:
+```bash
+pip install pipreqs
+```
+
+Run `pipreqs --ignore .venv` to generate an updated list of dependencies for the project in requirements file.