[galaxy-dev] Using Galaxy ToolShed API for uploading a tar-ball

Hi all, I've just skimmed Greg's latest blog post which is about the REST API for the ToolShed: http://gregvonkuster.org/galaxy-tool-shed-restful-api/ I would be interested in automating pushing updates to the ToolShed, which I currently do manually by uploading a tar-ball. Is it possible yet to upload a tar-ball via the API? Thanks, Peter