auction sample code

This is my repo for the auction sample.

The application works correctly using a PostgreSQL back end database. The application is a REST microservice that implements the following methods:

• getAuctions - get a list of all auctions
• createAndStartAuction - creates an auction and starts it
• placeBidOnAuction - allows a user to place a bid on an auction
• endAuction - ends an auction

I've also implemented Swagger documentation of the API.

I ran out of time, so I didn't write any unit tests.