fixed a little format

readme.md

@@ -7,14 +7,17 @@ Installation
 
 [Download zip
 file](http://www.vim.org/scripts/script.php?script_id=2981)
+
   cd ~/.vim
   unzip zencoding-vim.zip
 
 If you install pathogen.vim:
+
   cd ~/.vim/bundle # or make directory
   unzip /path/to/zencoding-vim.zip
 
 If you get source from repository:
+
   git clone http://github.com/mattn/zencoding-vim.git
   cd ~/.vim/bundle # or make directory