update project badges
refactor tests (do not use so many stubs and mocks)
bugfix: initialize the aasm state column after initialization of the _ActiveRecord_ instance #191
corrected callback order in README
version bump to 4.0.4
clarified behaviour of :skip_validation_on_save configuration option
bugfix: initialize the aasm state column after initialization of the ActiveRecord instance only if the attribute has been loaded #193
circumventing a bug in Rails 3 #193
version bump to 4.0.5
Fix example Instance-level inspection

The example for retrieving only permitted events returns an Array of Aasm Objects but not an Array of event names as symbols. This is fixed.
Merge pull request #194 from andywenk/master

Fix example Instance-level inspection