use after callback to initialize user association for cothread factory.
to get guard-jasmine to work on individual specs, ref: http://stackoverflow.com/questions/13753016/running-guard-jasmine-from-command-line-doesnt-run-any-specs
not using jasmine gem so remove it.
eliminate unnecessary requiring in gemfile using suggestions from http://ablogaboutcode.com/2012/01/12/a-simple-rails-boot-time-improvement/