Add plugins for Rust support.

sources_non_forked/rust.vim/README.md

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+# rust.vim
+
+## Description
+
+This is a vim plugin provides [Rust][r] file detection and syntax highlighting.
+
+It is synchronized daily to the vim support code in [rust-lang/rust][rr]'s
+master branch via cronjob.
+
+## Installation
+
+### Using [Vundle][v]
+
+1. Add `Plugin 'wting/rust.vim'` to `~/.vimrc`
+2. `vim +PluginInstall +qall`
+
+*Note:* Vundle will not automatically detect Rust files properly if `filetype
+on` is executed before Vundle. Please check the [quickstart][vqs] for more
+details.
+
+### Using [Pathogen][p]
+
+1. `cd ~/.vim/bundle`
+2. `git clone https://github.com/wting/rust.vim.git`
+
+[rr]: https://github.com/rust-lang/rust
+[p]: https://github.com/tpope/vim-pathogen
+[r]: https://en.wikipedia.org/wiki/Rust_language
+[v]: https://github.com/gmarik/vundle
+[vqs]: https://github.com/gmarik/vundle#quick-start