3(global-linum-mode t)
 4(add-to-list 'load-path "~/.emacs.d/plugins")
 5;添加yasnippet                                                                                             
 6(require 'yasnippet)
 7(yas-global-mode 1)
 8;添加popup                                                                                                 
 9(require 'popup)
10;添加auto-complete                                                                                         
11(add-to-list 'load-path "~/.emacs.d/plugins/auto-complete-install")
12(require 'auto-complete-config)
13(ac-config-default)
14;添加auto-complete-clang                                                                                   
15(require 'auto-complete-clang)