Determine if race conditions still exist on Windows.

[tcr]

See #11. Check out branch https://github.com/tessel/t2-vm/tree/ondreian-patches for race condition patches. /cc @ondreian

[ondreian]

@tcr Just a quick update, I'm back from my travels and my schedule is looking like I won't be able to get to this until tomorrow or the next day.

[ondreian]

@tcr So, after some testing, it seems that original race conditions no longer exist between issuing the setup commands to the virtual machine and the shutdown.

On occasion I am still getting an error where our 10 second wait built in here is not long enough to insure that the vm has started before we open the socket.

I think instead a more robust solution may be to employ the vboxmanage list runningvms command instead of our hard 10 second wait.

example output:

C:\dev\npm-modules\t2-vm>vboxmanage list runningvms
"tessel2" {3c9d6884-6816-4a50-b4cd-0e0f3f2d43ea}