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:     + shortcode (string) - shortcode to get associated URL
  
  
  + Response 302 (text/plain)
  
      + Header
  
              Location: http://shortcode_associated_url.com
  
  + Response 404 (text/plain)
  
              Shortcode not found.
  
  
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
              
      
  
  