Image Thumbnails

// Register Theme Features
function custom_theme_features()  {

	// Add theme support for Featured Images
	add_theme_support( 'post-thumbnails' );

	 // Set custom thumbnail dimensions
	set_post_thumbnail_size( 300, 200, true );

	// Add theme support for HTML5 Semantic Markup
	add_theme_support( 'html5', array( 'search-form' ) );
}
add_action( 'after_setup_theme', 'custom_theme_features' );