Getting Full HTML Source code in when using WP REST API

Installed WP REST API v2Beta13 on Wordpress version 4.4.2 from here, and also gone through it's documentation.

When trying to use the api via POSTMAN and hitting URL: http://ift.tt/1recUN9 as a GET request, whole HTML code of home-page (http://ift.tt/1hgC4kK) is returned as response. In fact any URL is giving the html code of home page.

Expect output should be json formatted data as mentioned in it's documentation.

Permalinks setting in wordpress admin-panel is set to http://ift.tt/1recUNd

via Chebli Mohamed