Vim plugin for yapf

Hey guys, I have made a [Vim plugin](https://github.com/bennyyip/vim-yapf) for yapf, which is a fork of [vim-clang-format](https://github.com/rhysd/vim-clang-format).
It provides more functionality than the simple [yapf.vim](https://github.com/google/yapf/blob/master/plugins/vim/autoload/yapf.vim), such as, specifying the code style, format on save and format when leave insert mode.
Should we add a link to my plugin [here](https://github.com/google/yapf/blob/master/plugins/README.rst)? It's really useful.