createContainer then demux and do io
using attach like a flame to the match
lets see what commands to send
ok sick, now just need to make it quit
looks like it works but only when it fails
improve timing and stuff
isolate the interesting part into lib/slave
Getting closer...

But no cigar. The issue is that only a single command can be run inside a
container. So, we'll need to have SpawnJSON.js be long-running, and have it
accept multiple commands in succession, and communicate back their
success/failure.
wip
cleanup
1.0.0