URL Shortener Microservice

User Stories:

• I can pass a URL as a parameter and I will receive a shortened URL in the JSON response.
• 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.
• When I visit that shortened URL, it will redirect me to my original link.

Example usage:

https://shorten-that.herokuapp.com/shorten/http://iamarshad.com

Example output:

{"original_url":"http://iamarshad.com","short_url":"https://url-shortener-microservicee.herokuapp.com/7027"}

Usage:

https://shorten-that.herokuapp.com/7027

Will redirect to:

http://iamarshad.com