composer包使用国内镜像下载

composer.json

@@ -1,5 +1,11 @@
 {
     "require": {
         "rodneyrehm/plist": "^2.0"
+    },
+    "repositories": {
+        "packagist": {
+            "type": "composer",
+            "url": "https://packagist.phpcomposer.com"
+        }
     }
 }