Welcome the user and offer to enter a nickname on the index page.
Add Procfile so that foreman (and therefore Heroku) know how to start this app
Merge pull request #3 from fqueze/welcome-index-html

Welcome the user and offer to enter a nickname on the index page.
Merge pull request #4 from dmose/heroku

Add Procfile so that foreman & Heroku know how to start the app.