identities model created; validating pivotal tracker identity credentials
Merge branch 'master' into feature/47519843_managing_pivotal_tracker_identities

Conflicts:
	Gemfile
	Gemfile.lock
	spec/spec_helper.rb
identities management wip
identities management - controller actions wip
Merge branch 'feature/47519843_managing_pivotal_tracker_identities' of github.com:amberbit/KarmaTracker into feature/47519843_managing_pivotal_tracker_identities
Merge branch 'master' into feature/47519843_managing_pivotal_tracker_identities

Conflicts:
	app/models/user.rb
	config/routes.rb
	db/schema.rb
	spec/factories/users_factory.rb
Identities API