Don't blink cursor
add hippie-expand config
Add cscope and sr-speedbar
add ace-jump-buffer
Set cursor's color to magenta
add commentary
set environment , it will use in the future
copy from purcell's emacs config which has been delete.
emacs built-in completion
just like ctags
cedet config . write it but not enable it
same as  sementic-extend.el
irony-mode is C/S completion like clang-async
icons for pop-up notify