A front-end challenge. Display three randomly-selected cards side by side.
- GET users from https://jsonplaceholder.typicode.com/users
- Avatar URLs in the form https://api.adorable.io/avatars/285/erictj@gmail.com.png (where that's their email)
- Choose three at random.
- Display them using three cards, aligned in columns.
- A card should look like: http://i.imgur.com/ocuFSem.png
