Demo improvements

I’d like to start a todo list of the things we can immediately improve with our code base before we start doing any new features. Ideally these would go onto github issues. Here are a few:

  • code clean up with ethers
  • start testing
  • cleaner interaction with rDAI contract (remove hardcoded values)

Ive started some of these in github, but i agree its probably better to lay everything out here first before making individual issues