Hello Mike,
looks very good for the start.
It can be started on my debian ARM sheevaplug and also my Raspberry PI:
$ ./fr24feed_arm-le_222 --fr24key=YOUR_SHARING_KEY
[i]Downloading configuration...OK
[i]Parsing configuration...ERROR
[failure]: Not found, check your key!
{"result":"failure","info":"Not found, check your key!"}
Please provide me with a SHARED-KEY.
My airport is EDDK (cologne airport CGN).
Thanks
Willi