Add rust syntax support

.vimrc

@@ -23,6 +23,10 @@ if executable('ansible')
   Plug 'pearofducks/ansible-vim'
 endif
 
+if executable('rustc')
+  Plug 'rust-lang/rust.vim'
+endif
+
 Plug 'trusktr/seti.vim'
 
 call plug#end()