first commit. tests for comment complete.
built test for vote value 1 or -1 throws error.
added test assert vote should equal 1
tried to add positive nad negative vote value to vote model.  throws error in model
question has many comments passes but with undefined method 'comment' for Question error.
adding comments and votes --polymorphic--to question model generated errors when raked.  Need to edit syntax of has_many and vaildates for votes and comments in Question model
added tag and test but similar no method error.
fixed error in tag, was typo in validates
added comments to answer.  Still error in polymorphic association syntax in model
answer knows score doesn't work