Add subdomain configuration JSON file

domains/subdomain.json

@@ -0,0 +1,9 @@
+{
+    "owner": {
+        "username": "quweijia",
+        "email": "quweijia@vip.qq.com"
+    },
+    "records": {
+        "CNAME": "quweijia.github.io"
+    }
+}