anchor.diff:      + shortcode (string) - shortcode to get associated URL
   
   
  -+ Response 302 (text/plain)
  ++ Response 302 (text/html)
   
       + Header
   
               Location: http://shortcode_associated_url.com
   
  -+ Response 404 (text/plain)
  ++ Response 404 (text/html)
   
               Shortcode not found.
   
  
positive.code:     + Attributes (object)
          
          + shortcode (string) - The returned shortcode
              
  
  + Response 400 (text/plain)
      
          Url is not present.
  
  + Response 409 (text/plain)
  
          Shortcode already taken.
  
  
  + Response 422 (text/plain)
  
          Invalid shortcode.
  
  
negative.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. It must respect the *^[0-9a-zA-Z_]{4,}$* pattern
              
      
  
  