Add gitgutter plugin

plugin/keys.vim

@@ -158,3 +158,8 @@ inoremap <C-A> <C-O>:call Select()<CR>
 nnoremap <leader>ag :call fzf#vim#ag(expand('<cword>'),  WithGitRoot())<CR>
 nnoremap <leader>tg :call fzf#vim#tags(expand('<cword>'), {'options': '--exact --select-1 --exit-0'})<CR>
 
+" gitgutter
+nmap <leader>ggt <Esc>:GitGutterToggle<CR>
+nmap <leader>nh <Plug>GitGutterNextHunk
+nmap <leader>bh <Plug>GitGutterPrevHunk
+

vimrc

@@ -27,7 +27,6 @@ Plug 'Keithbsmiley/swift.vim'
 Plug 'majutsushi/tagbar'
 Plug 'ternjs/tern_for_vim'
 Plug 'xolox/vim-easytags'
-Plug 'tpope/vim-fugitive'
 Plug 'nathanaelkane/vim-indent-guides'
 Plug 'xolox/vim-misc'
 Plug 'Shougo/vimproc.vim', {'do' : 'make'}
@@ -41,6 +40,10 @@ Plug 'junegunn/fzf', { 'do': './install --bin' }
 Plug 'junegunn/fzf.vim'
 Plug 'sbdchd/neoformat'
 
+" scm
+Plug 'tpope/vim-fugitive'
+Plug 'airblade/vim-gitgutter'
+
 " local_vimrc
 Plug 'LucHermitte/lh-vim-lib'
 Plug 'LucHermitte/local_vimrc'