Add sand.json for personal notebook configuration

domains/sand.json

@@ -0,0 +1,10 @@
+{
+  "description": "sand.is-a.dev : This is my personal notebook",
+  "owner": {
+    "username": "Sandau1204",
+    "email": "uongsythanganh@gmail.com"
+  },
+  "records": {
+    "CNAME": "sandau1204.github.io"
+  }
+}