Update README.md

experimental/README.md

@@ -3,3 +3,6 @@ This folder contains experimental stuff
 
 Buy me a coffee?  https://www.buymeacoffee.com/jameszah
 
+The folder 07x_FTP is a the version 7 discussed in the main readme, but it adds an ftp server host.
+
+Set up your ftp client in passive mode and connect to the ip address of the esp32.