Litird
一个简单的服务框架，基于 koa，类似于 egg。
初始化项目
npm i litird -g mkdir examplecd examplelitird-initnpm inpm startapp 加载顺序
constructor => beforeMountRouter => onready => start() => onstart属性字段
app properties: config logger redis mongoose mongoosePlugins model entity service server validator validate controller router httpServer service properties: app config logger redis model service controller properties: app config logger redis model entity service validate