Add alt attribute to backstretch image

includes/class-displayfeaturedimagegenesis-output.php

@@ -145,6 +145,7 @@ class Display_Featured_Image_Genesis_Output {
 			'centeredX' => (bool) $backstretch_vars['centeredX'],
 			'centeredY' => (bool) $backstretch_vars['centeredY'],
 			'fade'      => (int) $backstretch_vars['fade'],
+			'title'     => esc_attr( $this->item->title ),
 		);
 
 		wp_localize_script( 'displayfeaturedimage-backstretch-set', 'BackStretchVars', $output );

includes/js/backstretch-set.js

@@ -31,6 +31,9 @@
 				fade: parseInt( plugin.params.fade )
 			}
 		);
+
+		var image = $( '.big-leader .backstretch img' );
+		image.attr( 'alt', plugin.params.title );
 	}
 
 	function _getSource() {