Add kaiblog.json for domain configuration

domains/kaiblog.json

@@ -0,0 +1,9 @@
+{
+  "owner": {
+    "username": "Kaihchs118",
+    "email": "kaiyt0621@gmail.com"
+  },
+  "records": {
+    "CNAME": "Kaihchs118.github.io"
+  }
+}