Added --ipv4 flag to reload requests

This is most likely a bug in `curl`, however, this will provide a patch until `curl` itself releases a patch.

I updated to OSX 10.10 last night and `curl` (7.38.0) is returning Error (7) Connection refused on all reload requests. This has to do with a conflict between libcurl and OSX 10.10 using IPv6 by default.  The `--ipv4` flag fixes this temporarily, though, it would be ideal to not have to include here.