Add sungwookyoon.json for domain configuration

domains/sungwookyoon.json

@@ -0,0 +1,9 @@
+{
+  "owner": {
+    "username": "sungwook9997",
+    "email": "sungwook999@kaist.ac.kr"
+  },
+  "records": {
+    "CNAME": "sungwook9997.github.io"
+  }
+}