upgrade buttons : indent

library/ZendAfi/View/Helper/Button.php

@@ -50,8 +50,5 @@ class ZendAfi_View_Helper_Button extends ZendAfi_View_Helper_BaseHelper {
     return $button->setAttribs(array_merge($button->getAttribs(),
                                            ['onclick' => sprintf('window.location = \'%s\'',
                                                                  $button->getUrl())]));
-
-
   }
-}
-?>
\ No newline at end of file
+}
\ No newline at end of file