Add ignore rule for test.db sqlite3.
Fix constant value for DateTime.

I've been programming less Ruby and more BDE apparently.
Remove Rack::Session:Cookie from API.

This is added as a middleware in the config.ru file since we have added
the Sinatra application.
Fix OmniAuth constant for the Gem.
Fix the method #primary_key.

This should have been #set_primary_key. I mainly got confused with the
DSL for the schema migrations here.
Add some proper parameters to Rack::Session::Cookie.

There was a big ole' warning telling me I was being an idiot to not set
a secret key.