Updated the blender exporter:
Updated the blender exporter:

* Fixed bug that could introduce an additional comma leading
to a parsing error.

* Simplified the stream naming scheme (backwards compatible).

* Made the default filename 'scene.json' rather then using the
name of the current .blend file, since that's what the client
load code expects the file to be called.

vizorvr/vizor-create,vizorvr/vizor,vizorvr/vizor-create,vizorvr/patches,engijs/engi,beni55/engi,vizorvr/patches,vizorvr/patches,vizorvr/vizor,beni55/engi,vizorvr/patches,vizorvr/patches,engijs/engi,vizorvr/vizor,engijs/engi,vizorvr/vizor-create,beni55/engi