Change Add to Cart Text on WooCommerce

Genesis Woo Cart Button Text.php

add_filter( 'add_to_cart_text', 'woo_custom_cart_button_text' ); // < 2.1
add_filter( 'woocommerce_product_single_add_to_cart_text', 'woo_custom_cart_button_text' ); // 2.1 +
function woo_custom_cart_button_text() {
	return __( 'Buy Product', 'textdomain' );
}

gistfile1.txt

/**
 * Change the add to cart text on single product pages
 * via Remi Corson on wpexplorer: http://www.wpexplorer.com/best-woocommerce-snippets-wordpress/
 */
function woo_custom_cart_button_text() {
	return __('My Button Text', 'woocommerce');
}
add_filter('single_add_to_cart_text', 'woo_custom_cart_button_text');



/**
 * Change the add to cart text on product archives
 */
function woo_archive_custom_cart_button_text() {
	return __( 'My Button Text', 'woocommerce' );
}
add_filter( 'add_to_cart_text', 'woo_archive_custom_cart_button_text' );