update readme

Author: wsdjeg

README.md

@@ -4,18 +4,31 @@ Automatically call mkdir -p as necessary when writing files.
 
 ## Installation
 
-### With [Vundle][vundle]
+### With [NeoBundle](https://github.com/Shougo/neobundle.vim)
 
 In vimrc:
 
 ```vim
-Bundle 'benizi/vim-automkdir'
+NeoBundle 'https://github.com/Shougo/neobundle.vim'
 ```
 
 Then:
+```vim
+:NeobundleInstall
+```
+
+### With [Vundle.vim](https://github.com/VundleVim/Vundle.vim)
+
+In vimrc:
 
 ```vim
-:BundleInstall
+Plugin 'benizi/vim-automkdir'
+```
+
+Then:
+
+```vim
+:PluginInstall
 ```
 
 ### With [vim-addon-manager][vam]
@@ -30,6 +43,15 @@ Open a file, even if its directory doesn't exist.
 
 Save it.
 
+## Option
+
+`g:automkdir_silent`
+
+If set = 1, the plugin will silent makedir!
+
+default 0
+
+
 ## Full documentation
 
 Within `vim` run:
@@ -38,5 +60,4 @@ Within `vim` run:
 :help automkdir
 ```
 
-[vundle]: https://github.com/gmarik/vundle#readme
 [vam]: https://github.com/MarcWeber/vim-addon-manager