github 网址：https://github.com/eggjs/egg-init
egg-init 常用命令：
Usage: egg-init [dir] --type=simple
Options:
--type boilerplate type [string]
--dir target directory [string]
--force, -f force to override directory [boolean]
--template local path to boilerplate [string]
--package boilerplate package name [string]
--registry, -r npm registry, support china/npm/custom, default to auto detect [string]
--silent don't ask, just use default value [boolean]
--version Show version number [boolean]
-h, --help Show help [boolean]
- Create a simple type application
$ egg-init --type simple [dest]