this is my vimrc

.vimrc

" don't bother with vi compatibility
set nocompatible

" vundle start
filetype off                  " required

set rtp+=~/.vim/bundle/Vundle.vim
call vundle#begin()

Plugin 'gmarik/Vundle.vim'
Plugin 'wavded/vim-stylus'
Plugin 'brettof86/vim-swigjs.git'
Plugin 'tpope/vim-surround'
Plugin 'junegunn/seoul256.vim'
Plugin 'mattn/emmet-vim'
Plugin 'Valloric/YouCompleteMe'
Plugin 'marijnh/tern_for_vim'
Plugin 'scrooloose/syntastic'
Plugin 'Chiel92/vim-autoformat'
Plugin 'mileszs/ack.vim'
" Plugin 'nathanaelkane/vim-indent-guides'
" Plugin 'ervandew/supertab'
Plugin 'honza/vim-snippets'
Plugin 'tpope/vim-fugitive'
Plugin 'SirVer/ultisnips'
" Plugin 'flazz/vim-colorschemes' 
Plugin 'mattn/webapi-vim'
Plugin 'mattn/gist-vim'
Plugin 'elzr/vim-json'
Plugin 'jelera/vim-javascript-syntax'
Plugin '907th/vim-auto-save'
" Plugin 'townk/vim-autoclose'
Plugin 'jlanzarotta/bufexplorer'
Plugin 'kien/ctrlp.vim'
Plugin 'shougo/neocomplcache.vim'
Plugin 'jistr/vim-nerdtree-tabs'
Plugin 'wycats/nerdtree'
Plugin 'tomtom/tcomment_vim'
Plugin 'MarcWeber/vim-addon-mw-utils'
Plugin 'bling/vim-airline'
Plugin 'kchmck/vim-coffee-script'
Plugin 'junegunn/vim-easy-align'
Plugin 'Lokaltog/vim-easymotion'
Plugin 'tpope/Vim-fugitive'
Plugin 'hrsh7th/vim-hybrid'
Plugin 'statianzo/vim-jade'
Plugin 'tpope/vim-markdown'
Plugin 'terryma/vim-multiple-cursors'
Plugin 'blerins/flattown'
Plugin 'altercation/vim-colors-solarized'

call vundle#end()

" enable syntax highlighting
syntax on

" ensure ftdetect et al work by including this after the Vundle stuff
filetype plugin indent on

set autoindent
set autoread                                                 " reload files when changed on disk, i.e. via `git checkout`
set backspace=2                                              " Fix broken backspace in some setups
set backupcopy=yes                                           " see :help crontab
set clipboard=unnamed                                        " yank and paste with the system clipboard
set background=dark
set directory-=.                                             " don't store swapfiles in the current directory
set encoding=utf-8
set expandtab                                                " expand tabs to spaces
set ignorecase                                               " case-insensitive search
set incsearch                                                " search as you type
set laststatus=2                                             " always show statusline
set list                                                     " show trailing whitespace
set listchars=tab:‚ñ∏\ ,trail:‚ñ´
set number                                                   " show line numbers
set ruler                                                    " show where you are
set scrolloff=3                                              " show context above/below cursorline
set shiftwidth=2                                             " normal mode indentation commands use 2 spaces
set showcmd
set smartcase                                                " case-sensitive search if any caps
set softtabstop=2                                            " insert mode tab and backspace use 2 spaces
set tabstop=8                                                " actual tabs occupy 8 characters
set wildignore=log/**,node_modules/**,target/**,tmp/**,*.rbc
set wildmenu                                                 " show a navigable menu for tab completion
set wildmode=longest,list,full
set guifont=Monaco:h14
set relativenumber 
set number
set undofile
set undodir=/Users/qiuwang/.vimundo/
set tabstop=2 softtabstop=1 expandtab shiftwidth=2 smarttab

let g:solarized_termcolors=256
colorscheme solarized

" keyboard shortcut
let mapleader = ' '
let &t_Co=256
" let g:neocomplcache_enable_at_startup = 1
let g:auto_save = 1
" let g:neocomplcache_enable_camel_case_completion = 1
" let g:neocomplcache_enable_underbar_completion = 1
" let g:neocomplcache_enable_auto_select = 0
let g:user_emmet_leader_key='<C-Y>'
let g:ycm_filetype_blacklist = {
      \ 'tagbar' : 1,
      \ 'qf' : 1,
      \ 'notes' : 1,
      \ 'markdown' : 1,
      \ 'unite' : 1,
      \ 'text' : 1,
      \ 'vimwiki' : 1,
      \ 'gitcommit' : 1,
      \}

" Trigger configuration. Do not use <tab> if you use
" https://github.com/Valloric/YouCompleteMe.
let g:UltiSnipsExpandTrigger="<c-o>"
let g:UltiSnipsJumpForwardTrigger="<c-b>"
let g:UltiSnipsJumpBackwardTrigger="<c-z>"
let g:tern_map_keys=1
let g:tern_show_argument_hints='on_hold'

" If you prefer the Omni-Completion tip window to close when a selection is
" made, these lines close it on movement in insert mode or when leaving
" insert mode
autocmd CursorMovedI * if pumvisible() == 0|pclose|endif
autocmd InsertLeave * if pumvisible() == 0|pclose|endif

" If you want :UltiSnipsEdit to split your window.
let g:UltiSnipsEditSplit="vertical"

map <c-u> :NERDTree<cr>
map <leader>b :Bufstop<cr>

" Start interactive EasyAlign in visual mode (e.g. vip<Enter>)
vmap <Enter> <Plug>(EasyAlign)

" Start interactive EasyAlign for a motion/text object (e.g. <Leader>aip)
nmap <Leader>q <Plug>(EasyAlign)

nnoremap <Up> <ESC>:bN<CR>
nnoremap <Down> <ESC>:bn<CR>
nnoremap <leader>f :CtrlPBuffer<CR>
nnoremap <leader>r :CtrlPMRU<CR>
nnoremap <BS><BS> <c-^>
nnoremap H ^
nnoremap L g_
nnoremap ; :
nnoremap <C-j> <C-w>j
nnoremap <C-k> <C-w>k
nnoremap <C-h> <C-w>h
nnoremap <C-l> <C-w>l
inoremap jj <ESC>
inoremap <expr><TAB>  pumvisible() ? "\<C-n>" : "\<TAB>"
inoremap <expr><C-Space> pumvisible() ? neocomplcache#close_popup() : "\<C-Space>"
vnoremap <leader>yo "*y
nnoremap <leader>po "*p
imap Àô <Left>
imap ∆ <Down>
imap Àö <Up>
imap ¬ <Right>
nmap <F6> :TernRename<CR>
nmap <F7> :TernDef<CR>
nmap <F8> :TernRefs<CR>
nmap <F9> :TernDoc<CR>

autocmd BufNewFile,BufReadPost *.md set filetype=markdown