updating README with a list of the vendor plugins
updating README with a list of the vendor plugins

okfn/bibserver,flowsta/bibserver,okfn/bibserver,jasonzou/MyPapers,flowsta/bibserver,flowsta/bibserver,flowsta/bibserver,jasonzou/MyPapers,okfn/bibserver,jasonzou/MyPapers,jasonzou/MyPapers,jasonzou/MyPapers,okfn/bibserver