anchor.diff:  # xo-login API Root [/]
   
   
  -## Login user [PUT]
  +## Login user [PUT/login]
   
   Request contains username and password and with this credentials
   4 types of responses are returned:
  
positive.code: 
  + Response 404 (application/json)
  
  ## Create a new user [POST/users]
  
  + username (string) - name of the user
  + password (string) - password of the user
  
negative.code: 
  + Response 400 (application/json)
  
  ## Get username by token [GET/login/{token}]
  Returns username by token if found
  
  
  