Restore default rewrite rules

I think than your plugin is superb, but need a little add-on.

I change your Flush rules button, because I think is not necessary, almost for me :-(. I change it for Restore default, to get the default rewrite rules of WordPress and start again with new rules. I think than this is necessary because when the plugin is active there’s not option to do this, without deleting the rewrite_rules_save in wp_options table.

To do this I just add a line to this code:

if(isset($_POST['rule-flush'])) {
				$wp_rewrite->flush_rules();
				$message = 'Rule flushed.';
			}

And change with this:

if(isset($_POST['rule-flush'])) {
				$wp_rewrite->flush_rules();
				update_option( 'rewrite_rules_save' , $wp_rewrite->wp_rewrite_rules() );
				$message = 'Rule flushed and restored.';
			}

And change this line:
<input id="rule-flush" name="rule-flush" type="submit" class="button" value="Flush rules"/>

With this one:
<input id="rule-flush" name="rule-flush" type="submit" class="button" value="Restore default"/>

Please add something like this in the futures updates.

Thank’s a lot for your great job.

http://ww.wp.xz.cn/extend/plugins/rewrite/