* Add "package.el"
* Remove "80_yaml-mode.el" because it is unnecessary
* Add new inits file of "package.el"
* Remove packages because it is unnecessary to using package.el
* Ignore "elpa" directory
* Remove packages because it is unnecessary for using "package.el"
* Remove packages because it is unnecessary for using "package.el"
* Remove packages because it is unnecessary for using "package.el"