vim highlight whitespace at end of line and auto delete them

install Vundle.vim

1. mkdir ~/.vim/bundle
2. git clone https://github.com/gmarik/Vundle.vim.git ~/.vim/bundle/Vundle.vim  
3. create .vimrc if it not exist. add the following setting into .vimrc

set nocompatible              " be iMproved, required
filetype off                  " required

" set the runtime path to include Vundle and initialize
set rtp+=~/.vim/bundle/Vundle.vim
call vundle#begin()

" let Vundle manage Vundle, required
Plugin 'gmarik/Vundle.vim'

" All of your Plugins must be added before the following line
call vundle#end()            " required
filetype plugin indent on    " required

install vim-better-whitespace git:https://github.com/ntpeters/vim-better-whitespace

add : Plugin 'ntpeters/vim-better-whitespace' to .vimrc between vundle#begin() and vundle#end() 

Plugin 'ntpeters/vim-better-whitespace'

then rum vim : :PluginInstall 

if you want to auto delete whitespace if can add the following cmd into your .vimrc

autocmd BufWritePre * StripWhitespace