Updating README
Adding first route and view

Visiting / should really present the user with a login form, but authentication is too much to cover right now.

Let's instead pretend the user has logged in and been redirected to their own /reminders view.
Adding create Reminder

Here we setup the MongoDB driver and the model, view, and controller (route) for creating a Reminder.

Try submitting some and watch your Node log. Then try this in your mongo client:

db.reminders.find();