Document wifi setup when creating images

src/freedombone-image

@@ -103,7 +103,7 @@ DEBIAN_INSTALL_ONLY='no'
 # wifi settings
 WIFI_INTERFACE='wlan0'
 WIFI_SSID=
-WIFI_TYPE='wpa-psk'
+WIFI_TYPE='wpa2-psk'
 WIFI_PASSPHRASE=
 WIFI_HOTSPOT='no'
 WIFI_NETWORKS_FILE=~/${PROJECT_NAME}-wifi.cfg

src/freedombone-image-customise

@@ -81,7 +81,7 @@ DEBIAN_INSTALL_ONLY="no"
 # wifi settings
 WIFI_INTERFACE='wlan0'
 WIFI_SSID=
-WIFI_TYPE='wpa-psk'
+WIFI_TYPE='wpa2-psk'
 WIFI_PASSPHRASE=
 WIFI_HOTSPOT='no'
 WIFI_NETWORKS_FILE=~/${PROJECT_NAME}-wifi.cfg