Added hint about safeUp/safeDown

framework/views/migration.php

@@ -24,4 +24,15 @@ class <?= $className ?> extends Migration
 
         return false;
     }
+    
+    /*
+    // Use safeUp/safeDown to run migration code within a transaction
+    public function safeUp()
+    {
+    }
+    
+    public function safeDown()
+    {
+    }
+    */
 }