Add composer.json

composer.json

+{
+  "name": "drupal/simple_sitemap",
+  "description": "Simple XML sitemap creates a standard conform XML sitemap of your content.",
+  "type": "drupal-module",
+  "homepage": "https://drupal.org/project/simple_sitemap",
+  "authors": [
+    {
+      "name": "Pawel Ginalski (gbyte.co)",
+      "email": "contact@gbyte.co",
+      "homepage": "https://www.drupal.org/u/gbyte.co",
+      "role": "Maintainer"
+    },
+    {
+      "name": "Sam Becker (Sam152)",
+      "homepage": "https://www.drupal.org/u/sam152",
+      "role": "Co-maintainer"
+    }
+  ],
+  "support": {
+    "issues": "https://drupal.org/project/issues/simple_sitemap",
+    "irc": "irc://irc.freenode.org/drupal-contribute",
+    "source": "https://cgit.drupalcode.org/simple_sitemap"
+  },
+  "license": "GPL-2.0+",
+  "minimum-stability": "dev",
+  "require": { }
+}
+