新增插件

Changes to be committed:
	modified:   .vimrc
	modified:   README.md

README.md

@@ -9,3 +9,13 @@ Plug 'tpope/vim-sensible'
 Plug 'preservim/nerdtree'
 
 Plug 'airblade/vim-gitgutter'
+
+Plug 'preservim/nerdtree'
+
+Plug 'airblade/vim-gitgutter'
+
+Plug 'liuchengxu/vim-which-key'
+
+Plug 'vim-airline/vim-airline'
+
+Plug 'jiangmiao/auto-pairs'