Customize action button, not only press event.

[WenchaoD]

Hi @mwaterfall

Can we add this to MWPhotoBrowserDelegate

- (UIBarButtonSystemItem)photoBrowser:(MWPhotoBrowser *)photoBrowser actionButtonSystemItemForPhotoAtIndex:(NSUInteger)index;

So we can do this:

- (UIBarButtonSystemItem)photoBrowser:(MWPhotoBrowser *)photoBrowser actionButtonSystemItemForPhotoAtIndex:(NSUInteger)index
{
    return UIBarButtonSystemItemTrash;
}

So we can do this:

- (void)photoBrowser:(MWPhotoBrowser *)photoBrowser actionButtonPressedForPhotoAtIndex:(NSUInteger)index
{
    // Delete photos
}

[dogvscat]

@WenchaoIOS you can add trash button on toolbar to replace system toolbar.