Initial public release

MacOS X implementation of the Mirage NETWORK interface.

This interface exposes raw Ethernet frames using the
Vmnet framework that
is available on MacOS X Yosemite onwards. It is suitable for
use with an OCaml network stack such as the one found at
https://github.com/mirage/mirage-tcpip.

For a complete system that uses this, please see the
MirageOS homepage.