Add skm_.json for domain configuration

domains/skm_.json

@@ -0,0 +1,9 @@
+{
+    "owner": {
+        "username": "skm-edu4",
+        "email": "[skm.edu4@gmail.com]"
+    },
+    "records": {
+        "CNAME": "skm-edu4.github.io"
+    }
+}