How to setup Wifi on a Raspberry Pi image

Using NotePad++ create the following text file and copy it to the root directory of your image:

country=gb
update_config=1
ctrl_interface=/var/run/wpa_supplicant

network={
 scan_ssid=1
 ssid="WIFI-NETWORKNAME-HERE"
 psk="WIFI-PASSWORD-HERE"
}

Then set the file as Unix EOF: