Now looks at the error that comes back from sequelize and uses boom to
format the error in a more friendly way. This should yield useful error
messages instead of generic 500s.
It's now possible to limit the models rest routes are created for. This
is done via a `models` option that can be simple to complex. The readme
has been updated to reflect this.
AFAIK, hapi-sequelize doesn't have a `request.models`, but it does have
a `request.getDb()` method that has `models` on it. This calls that
method to get the related models, but allows `request.models` to keep
working for backward compatibility.
Joey Baker