Add sunbin.json with owner and records details

domains/sunbin.json

@@ -0,0 +1,9 @@
+{
+  "owner": {
+    "username": "Sunbin3451",
+    "email": "sunbun3451@gmail.com"
+  },
+  "records": {
+    "CNAME": "sunbin3451.github.io"
+  }
+}