A very easy method to share beacons is via Dropbox or similar services that synchronize a folder between several computers.
This manual also works with other services similar to Dropbox like GDrive or Owncloud.
To share beacons via Dropbox between your nodes, you must (obviously) have a Dropbox account and you must create a shared folder for beacons and configure it on all nodes.
Storing the beacons is straight-forward:
beacon: store: path/to/dropbox/beacon/folder/node1.beacon
Each node should have its own file in order to avoid conflicts when writing to the files.
Loading the beacons is a little bit more complex, as it requires reading multiple files at once:
beacon: load: '|cat path/to/dropbox/beacon/folder/*.beacon'