title: How to add and remove Heroku Dynos through platform API
body: <p>I want to add and remove Heroku Dynos through platform API
  Just like we do</p>
  <pre><code>ps:scale web=0
  </code></pre>
  <p>in Heroku toolbelt CLI.</p>
  <p>I have already tried</p>
  <pre><code>POST /apps/{app_id_or_name}/dynos/{dyno_id_or_name}/actions/stop
  </code></pre>
  <p>but it doesn't do anything however the response has a status code of 200.</p>