API Project: URL Shortener Microservice for freeCodeCamp

User Stories

1. You should provide your own project, not the example URL.
2. You can POST a URL to /api/shorturl/new and get a JSON response with the property names original_url and short_url and the expected values for each.
3. When you visit /api/shorturl/<short_url>, you will be redirected to the original URL.
4. If you pass an invalid URL that doesn't follow the valid http://www.example.com format, the JSON response will contain { 'error': 'invalid url' }.