title: WordPress JSON API returns only 404 errors
body: <p>I'm brand new to <code>Wordpress</code> and I would like to use the <code>JSON API</code> plugin.</p>
  
  <p>So I put it in my plugin repository and I activated it but when I try to display the <code>Json</code> response by accessing the <code>http://localhost/wordpress/wp-json/posts</code> url I get a <code>404</code> error. </p>
  
  <p>I'm probably missing something but according to the documentation it should be that simple. Any idea of what am I doing wrong?</p>