anchor.diff:      + Attributes (object)
           
           + shortcode (string) - The returned shortcode
  -            
  +    
  +    + Body
  +        
  +            {"shortcode":"example_shortcode"}
   
  -+ Response 400 (text/plain)
  ++ Response 400 (text/html)
       
           Url is not present.
   
  -+ Response 409 (text/plain)
  ++ Response 409 (text/html)
   
           Shortcode already taken.
   
   
  -+ Response 422 (text/plain)
  ++ Response 422 (text/html)
   
           Invalid shortcode.
   
  
positive.code:         
          + url (string, required) - The url that the shortcode will point to
          + shortcode (string) - If informed, it will try to register this as
          the shortcode.
              
      
  
  
negative.code: 
  + Response 200 (application/json)
          
      + Attributes (object)
      
          + startDate (string)    - Date of inclusion of the shortcode (ISO8601)
          + redirectCount (number) - Number of times that the shortcode was used.
          + lastSeenDate (string) - Last time that the shortcode was used (ISO8601). This key will not be present if redirectCount == 0
      
      + Body
          
              {"startDate":"2016-08-14T17:11:09+00:00","redirectCount":1,"lastSeenDate":"2016-08-14T17:11:20+00:00"}
  
  
  + Response 404 (text/html)
  
              Shortcode not found.