Merge pull request #2 from JustSilverman/models

Created model skeletons for user, post, comment, comment_vote, post_vote
controllers
Merge branch 'master' of https://github.com/JustSilverman/hn_clone into controllers-temp
Merge pull request #3 from JustSilverman/controllers

Controllers updates
controllers done
Merge pull request #4 from JustSilverman/controllers

controllers done for the most part
Created seed data and added vote method to post and comment classes
Merge branch 'master' of https://github.com/JustSilverman/hn_clone into models
Modified controllers