Install Vim Plugins Located at Subdirectory with Vundle

We may meet a vim plugin located at a subdirectory in a git repository, such as the vim plugin of Mozilla's Rust.

If we want to install this kind of plugin with Vundle, we could set the value of "rtp" to override the default .

Bundle 'othree/html5.vim'
Bundle 'mozilla/rust', {'rtp': 'src/etc/vim'}