修正

README.md

@@ -2,7 +2,7 @@
 thinkphp5 验证码类库
 
 ## 安装
-> composer install topthink/think-captcha
+> composer require topthink/think-captcha
 
 
 ##使用

src/helper.php

@@ -24,7 +24,7 @@
  */
 function captcha($id = "", $config = [])
 {
-    $captcha = new \think\Captcha($config);
+    $captcha = new \think\captcha\Captcha($config);
     $captcha->entry($id);
 }