API: Authenticate

Description:
Returns a token (rftr_session_token) in the cookie header upon authentication.

URL:
http://localhost:3000/api/login

Formats:
JSON

HTTP Method:
POST

Requires Authentication:
false

Parameters:
user_name
password

Returns:
Auth token in cookie header to be used in following API calls. Token should be used in the Authorization request header of the calls:
request.setRequestHeader('Authorization', "RFTR_Token " + token)