Add setup instructions

README.md

@@ -1,3 +1,20 @@
 # vistassh-py
 
 Python-based web interface for VistA roll-and-scroll terminal
+
+## Getting started
+
+You will need:
+- Python 3.10+ & pip
+- Node.js & npm
+
+To install the dependencies and build the frontend, perform the following steps:
+
+```bash
+pip install -r requirements.txt
+cd frontend
+npm install
+npm run build
+```
+
+To run, invoke `main.py`.