Update install instructions

README.md

@@ -57,7 +57,7 @@ The `environments.ini` file defines some pre-built environments and examples of
 
 ## Setup and Config
 
-1.  Once installed, connect to the built-in Wifi on the ESP to set up your access point.
+1.  Once installed, connect to the built-in Wifi on the ESP to set up your access point. The SSID will look like ESPGeiger-\<alpha-num\>
 2.  When you connect a window show pop up asking for Wifi Configuration, if not browse to http://192.168.4.1/
 3.  Select the SSID and insert the password for the network you'd like to connect to.
 4.  Once connected to the network you can browse to the ESPGeiger IP address directly or enter `http://<name of the device>.local` into your browser, for example http://ESPGeiger-83e6a4.local