Event Registration Serverless

Setup:

Install the Serverless framework - https://serverless.com/framework/docs/providers/aws/guide/quick-start/
Make sure your AWS account has access to Dynamodb, Lambda, APIGateway
Clone the Project
From the root directory run 'serverless deploy'
Run 'serverless remove' to tear the project down

TODO's:

Expand automated test coverage
Return proper HTTP codes for all the use-cases
Tighten access controls
Invalidate session on sign out