* modify method name
   * do_backup → put_backup
   * do_symlink → put_symlink
* Add usage
* Add new file kr4mb.sh
* Add new file vichromerc
* Delete ac-comphist.dat because it is dat_file for auto-complete.el
* Modify init.el for not include evil.el
   * There is no evil.el in emacs.d/elisp/evil
* Modify .gitignore for adding emacs pattern that you want to ignore