I am using Wordpress version 4.4.1. And i am trying to activate WP REST API Version 2 plugin. And it activated successfully. But When i go to wp-json link it show the error 404 "URL not found". Anyone have any idea why i am getting this error. Thanks in advance
Following is my link try to get a wp-json:-

http://localhost/restDemo/wp-json/wp/v2/e.g.http://localhost/restDemo/wp-json/wp/v2/pages?filter[posts_per_page]=4&filter[orderby]=ehem