[tz] Beginner's help request

[Paul Eggert]

On 10/30/2017 05:30 PM, Daniel Ford wrote:
> Then we need to download the current 'africa' file (for the above example) from the TZ FTP page, and save it in SPIFFS.

We're not set up to support lots of users downloading files. The intent 
is that you download the information once, and then resend it to your users.

> We then do a string search in that file, for (in this example) "Zone Africa/Casablanca"
This sounds pretty brittle. There should be a better way; unfortunately 
we don't support that "better way" right now. But it's something that 
you could do, since you can massage the data before sending it to your 
users.