title: How add a new property to Post entity in "WP REST API" plugin of WordPress?
body: <p>I'm trying to add a new property to the Post entity of "WP REST API" plugin. The new property is "views". It means the numbers of times that a post has been viewed. The data come from the plugin "Post Views Counter" how is on the WordPress table wp_post_views.</p>
  
  <p>What's is the easiest form to do it?</p>
  
  <p>Thanks in advance,</p>