Add hook to test staging deploys

plugin.php

@@ -19,3 +19,19 @@
 
 // Exit if accessed directly.
 defined( 'ABSPATH' ) || exit;
+
+/**
+ * Initialize plugin functionality on WordPress init.
+ * Adds custom content to the site header.
+ *
+ * @return void
+ */
+
+// Add action to wp_head to insert content in header.
+add_action(
+	'wp_head',
+	function() {
+		// Output custom meta tags or other header content.
+		echo 'JUST A TEST';
+	}
+);