Update README.md

README.md

@@ -1,3 +1,16 @@
 # cscs-keygen
 
 Python script to automate fetching a new SSH keypair for CSCS infrastructure. It relies on credentials stored in a cloud-based password manager, like Bitwarden or 1Password.
+
+## Setup
+
+### Prerequisites
+
+- Python 3.10 with the dependencies listed in `requirements.txt` installed
+- An account with a supported password manager (Bitwarden, 1Password)
+- The command-line interface (CLI) of password manager of your choice
+- (optional) A virtual environment with `venv` or `pipenv` (or any other similar utility of your choice)
+
+## Usage
+
+Please, check out the [docs](https://github.com/empa-scientific-it/cscs-keygen/wiki) of this project for details on the usage.