README: document how to connect to the internet using the installer

README.md

@@ -7,6 +7,19 @@ This repo is managed with Nix + GNU stow
   - `dd` the image to a flash drive (remember to `sync`)
   - boot off that flash drive
 
+- Connect to the Internet
+  - start `wpa_supplicant.service`
+  - `wpa_cli`
+    ```bash
+    add_network
+    # wil return a number
+    set_network <number> ssid "<ssid>"
+    set_network <number> psk "<your password>"
+    select_network 0
+    # profit
+    ```
+    source: https://askubuntu.com/a/833894
+
 - Format disk (DANGER)
   - modify the disko file to point to the disk to be formatted