title: Show product variation in woocommerce Added to cart message
body: <p>In my WooCommerce store, when a variable product is added to cart I have the user stay on the product page.</p>
  
  <p>The success notice message shows the product title along with the generic appendage, but I want it to show the variations with the product title in notices like so:</p>
  
  <p>"Mens Coat - size: small“ has been added to your cart.</p>
  
  <p>Rather than:</p>
  
  <p>"Mens Coat“ has been added to your cart.</p>
  
  <p>Currently running WooCommerce 3.3.1 and WP 4.9.</p>
  
  <p>Thanks</p>