title: Woocommerce REST API: Add meta data to line-item and to the database
body: <p>I am building an ionic app with Woocommerce.</p>
  
  <p>I have seen some stackoverflow questions on this but they are actually not answering the question so I am raising this again.</p>
  
  <p>I have been able to send order to the database but I need to add one more meta to the database and this data is the most important.</p>
  
  <p>According to this <a href="https://woocommerce.github.io/woocommerce-rest-api-docs/#order-properties" rel="nofollow noreferrer">link</a>, the meta property is readonly hence not usable.</p>
  
  <p>I want to know how I can achieve this either by adding extra parameter to the order <code>line_item</code> or by some wordpress or web hook.</p>
  
  <p>I am using a JS implementation with WooCommerce API V3.</p>