How do you test if you've wired up a single activerecord association correctly?

Drinker.new.samples.to_sql

This checks to see if activerecord is creating the right sql query. This is a great test to check if the wiring is correct if you don't already have things in the database.
Change Samples migration to match schema image

This is a tutorial for new people, so it pays to be very consistant
with naming so that new people don't get confused. It is harder
for me to make a new schema image than it is to change the
name of the migration to reflect the name in the schema,
so I changed the migration name of like to liked_the_tea.

On another note, naming is hard.
Removed .questions file.

It was not supposed to be on the master branch.