add how to install

README.md

@@ -7,3 +7,28 @@ License
 =======
 
 [MIT](http://opensource.org/licenses/MIT)
+
+
+Installation
+============
+
+Manually
+--------
+
+1. Put all files under $VIM.
+
+Pathogen
+--------
+
+1. Install with the following command.
+
+        git clone https://github.com/momota/junos.vim ~/.vim/bundle/junos.vim
+
+NeoBundle (https://github.com/Shougo/neobundle.vim)
+---------
+
+1. Add the following configuration to your `.vimrc`.
+
+        NeoBundle 'momota/junos.vim'
+
+2. Install with `:NeoBundleInstall`.