update doc blocks

Author: taylorotwell

src/Illuminate/Support/Facades/DB.php

@@ -57,6 +57,7 @@
  * @method static void forgetRecordModificationState()
  * @method static \Illuminate\Database\Connection useWriteConnectionWhenReading(bool $value = true)
  * @method static bool isDoctrineAvailable()
+ * @method static bool usingNativeSchemaOperations()
  * @method static \Doctrine\DBAL\Schema\Column getDoctrineColumn(string $table, string $column)
  * @method static \Doctrine\DBAL\Schema\AbstractSchemaManager getDoctrineSchemaManager()
  * @method static \Doctrine\DBAL\Connection getDoctrineConnection()