Grid loop for homepage (with HTML 5 removal of post footer).

genesis_grid_loop.php

<?php

//* Remove the post meta function for front page only
remove_action( 'genesis_entry_footer', 'genesis_post_meta' );

//* Add support for Genesis Grid Loop
remove_action( 'genesis_loop', 'genesis_do_loop' );
add_action( 'genesis_loop', 'child_grid_loop_helper' );
function child_grid_loop_helper() {
  if ( function_exists( 'genesis_grid_loop' ) ) {
		genesis_grid_loop( array(
			'features' => 2,
			'feature_image_size' => 'medium',
			'feature_image_class' => 'alignright post-image medium',
			'feature_content_limit' => 500,
			'grid_image_size' => 'grid-thumbnail',
			'grid_image_class' => 'aligncenter post-image',
			'grid_content_limit' => 200,
			'more' => __( '[Continue reading...]', 'genesis' ),
		) );
	} else {
		genesis_standard_loop();
	}
}

genesis();

grid-functions.php

add_image_size('grid-thumbnail', 500, 200, TRUE);

grid-style.css

.genesis-grid-even {
	float: right;
	width: 48%;
}
 
.genesis-grid-odd {
	clear: both;
	float: left;
	width: 48%;
}
 
.genesis-grid-even,
.genesis-grid-odd {
	padding: 0 0 16px;
	padding: 0 0 1.6rem;
	margin: 0 0 20px;
	margin: 0 0 2rem;
}