title: WP REST API v2: Getting posts by post ids
body: <p>I'm trying to get all posts by ID's using WP REST API. As per the documentation, we can use filter to use WP Query arguments. Using this with posts end point returns all the posts.</p>
  
  <pre><code>http://demo.wp-api.org/wp-json/wp/v2/posts/?filter[posts__in]=470,469
  </code></pre>