Create a UI to allow people to interact with the example?

Reading the example/tutorial code is _nice_, 👍
but I feel that having an example _app_ on Heroku would be _much_ more beginner-friendly. 🤔
Who wants to make this happen? :-)

Example: https://github.com/dwyl/phoenix-chat-example

# Todo

+ [ ] Create a basic Form for interacting with the Address Book
+ [ ] The form should allow new records to be created
+ [ ] Should allow _existing_ records to be "updated" (_append only of course_)
+ [ ] The List of Addresses should be the default "show" view
+ [ ] List should be ordered alphabetically by name. (_should this be first or last name?_)
+ [ ] Display the number of revisions for each address as a counter
+ [ ] clicking the counter (_number_) should display the version history for that record.