FreeCodeCamp API Project: URL Shortener Microservice

User stories:

1. I can pass a URL as a parameter and I will receive a shortened URL in the JSON response.
2. If I pass an invalid URL that doesn't follow the valid http://www.example.com format, the JSON response will contain an error instead.
3. When I visit that shortened URL, it will redirect me to my original link.

Example creation usage:

https://morning-retreat-24523.herokuapp.com/new/https://www.google.com 

Example creation output:

{ "original_url":"https://www.google.com", "short_url":"https://morning-retreat-24523.herokuapp.com/get/3578" }

Usage:

https://morning-retreat-24523.herokuapp.com/get/3578

Will redirect to:

https://www.google.com/