Switch to a class instance variable
Try another way of setting defaults
Merge remote-tracking branch 'upstream/fixing_defaults' into possibly_more_complete_solution

Conflicts:
	lib/setler/settings.rb
self when using instanced customer settings is not CustomerSettings

it is actually the scoped_settings instance which has no defaults

this moves the defaults call to the originally defaulted @settler_active_record_class

keeping gem using older version of activerecord
updating tests that broke with the change
Merge pull request #1 from thinkthroughmath/pks+jr/yet_another_possibly_more_complete_solution

Pks+jr/yet another possibly more complete solution