multiple Instances do not sync

[NexusNull]

I'm running multiple instances of node-localstorage in the same directory from different processes, the problem is that when one instance creates an entry, this entry doesn't appear on the other instances. That's why I would like to request some sort of syncing feature that updates the _keys periodically a function that can be called to sync _keys with the filesystem.

[lmaccherone]

I would gladly accept a pull request to achieve this. It seems like a good feature.

[NexusNull]

Oh, I just came back to this. I have it working on my branch, would probably only take a pull.