制作自己的自动加载框架

application文件夹下的类会自动加载，依赖topthink/think-orm

composer.json配置

{
    "require": {
        "topthink/think-orm": "^0.2.0"
    },
    "autoload": {
        "psr-4": {
            "app\\": "application"
        }
    }
}