should not throw when getting non-existant keys

[Raynos]

No description provided.

[juliangruber]

+1 for this. without that kv won't work with scuttlebutt on the server

[juliangruber]

This works but is ugly:

kv.has(key, function (err) {
  if (err) {
    onSync()
  } else {
    model.on('sync', onSync)
    kv.get(name).pipe(model.createWriteStream())
  }

  function onSync() {
    model.createReadStream().pipe(kv.put(name, { flags : 'a' }))
  }
})

[dominictarr]

This patch is wrong, It doesn't open the gate if there is no has fails, so end won't be emitted.
also, I don't really think you want an empty stream. that is weird. this behaviour seems more surprising,

Currently, this has the same behavior as fs, to emit 'error'

[Raynos]

Closing this due to staleness