Add ntd.json for portfolio configuration

domains/ntd.json

@@ -0,0 +1,12 @@
+{
+    "description": "ntd's portfolio",
+    "repo": "https://ngtrongdoanh.github.io/portfolio",
+    "owner": {
+        "username": "NgTrongDoanh",
+        "email": "ngtrongdoanh@gmail.com"
+    },
+    "record": {
+        "CNAME": "ngtrongdoanh.github.io"
+    }
+}
+