fix wifi settings

scripts/addWifi.sh

@@ -31,15 +31,21 @@ update_config=1
 fi
 
 # Validate arguments
-if [ -z "$ssid" ] || [ -z "$psk" ]; then
+if [ -z "$ssid" ]; then
   echo "invalid-args"
   exit 1
 fi
 
+key="WPA-PSK"
+if [ -z "$psk" ]; then
+  key="NONE"
+fi
+
 echo "
 network={
   ssid=\"$ssid\"
   psk=\"$psk\"
+  key_mgmt=\"$key\"
 }
 " | sudo tee -a "$file" >/dev/null