First I got some error throwing: something about «not matching target in localWebDirectoryPersistentResourcesTarget»
Now, with changed target and the «ResourceManagement» in original, it throws no error.
Here the code for using in Neos 3.0.x :
Hope the Procedere like written in in Read.me from https://github.com/mittwald/flow-symlink-publishing is still the same (the right one):
1. include the code above into Settings.yaml
2. delete all absolute referenced symlinks, etc., from the _Resources folder:
rm -rf Web/_Resources
In my local environment it worked, will try also on public server next days ...