## 初始化 `composer.json` 并下载 `CodeIgniter` 框架
### 新建 `/composer.json`
```json
{
"name": "sinoci/sinoci",
"version": "dev-master",
"private": true,
"require": {
"php": ">=5.4.0",
"codeigniter/framework": "3.*"
},
"author": "yozman",
"license": "MIT"
}
```
### 终端执行
```shell
composer install
```
### 当前目录结构
```
vendor/
composer.json
composer.lock
```
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