add bundle for vim-toml for TOML type

In .vimrc, turn on rustfmt_autosave, add options for json, toml,
yaml file types, and remove unnecessary bundles.
Add a new bundle for the toml file type.

.vim/bundle/vim-toml/ftplugin/toml.vim

@@ -0,0 +1,37 @@
+" File: ftplugin/toml.vim
+" Author: Kevin Ballard <kevin@sb.org>
+" Description: FileType Plugin for Toml
+" Last Change: Dec 09, 2014
+
+if exists('b:did_ftplugin')
+    finish
+endif
+let b:did_ftplugin = 1
+
+let s:save_cpo = &cpo
+set cpo&vim
+
+setlocal commentstring=#\ %s
+
+" Add NERDCommenter delimiters
+
+let s:delims = { 'left': '#' }
+if exists('g:NERDDelimiterMap')
+    if !has_key(g:NERDDelimiterMap, 'toml')
+        let g:NERDDelimiterMap.toml = s:delims
+    endif
+elseif exists('g:NERDCustomDelimiters')
+    if !has_key(g:NERDCustomDelimiters, 'toml')
+        let g:NERDCustomDelimiters.toml = s:delims
+    endif
+else
+    let g:NERDCustomDelimiters = { 'toml': s:delims }
+endif
+unlet s:delims
+
+let b:undo_ftplugin = ""
+
+let &cpo = s:save_cpo
+unlet s:save_cpo
+
+" vim: set et sw=4 ts=4: