Woocommerce integracion in a theme

functions-woocommerce-theme.php

<?php
// remove plugin default integration
remove_action( 'woocommerce_before_main_content', 'woocommerce_output_content_wrapper', 10);
remove_action( 'woocommerce_after_main_content', 'woocommerce_output_content_wrapper_end', 10);

// disable breadcrumbs (optional)
remove_action( 'woocommerce_before_main_content','woocommerce_breadcrumb', 20, 0);

// add defatul shop layaout
add_action('woocommerce_before_main_content', 'my_theme_wrapper_start', 10);
add_action('woocommerce_after_main_content', 'my_theme_wrapper_end', 10);

function my_theme_wrapper_start() {
    echo '<div id="main" class="col-sm-8 clearfix" role="main">';
}

function my_theme_wrapper_end() {
  echo '</div>';
}

add_action( 'after_setup_theme', 'woocommerce_support' );
function woocommerce_support() {
    add_theme_support( 'woocommerce' );
}