comments serializer now working, comments added to posts serializer too
comments serializer now working, comments added to posts serializer too

CMPUT404-FireBreathingRubberDuckies/CMPUT404-project-socialdistribution,CMPUT404-FireBreathingRubberDuckies/CMPUT404-project-socialdistribution,CMPUT404-FireBreathingRubberDuckies/CMPUT404-project-socialdistribution