Patched Add -F <pidfile> flag to write manage a pidfile
Patched Add -F <pidfile> flag to write manage a pidfile

- https://github.com/mist64/xhyve/pull/78/files

Signed-off-by: Koichi Shiraishi <2e5bdfebde234ed3509bcfc18121c70b6631e207@gmail.com>

zchee/docker-machine-driver-xhyve,zchee/docker-machine-driver-xhyve