Quick and dirty copy and modify of get-followers-ids.php to get-followers.php.

Invoked from command line:

./get-followers.php SCREENNAME

Includes delay loop to avoid (hopefully) hitting rate limit, so runs at 200 followers/minute.

Will get common stuff modularised, so these can be run from a simple wrapper script.

Note that get_loop() has been modified to take an extra argument which, if true, will report progress to screen. Useful when running from command line, rather than a cron job.