pull vote_count logic from view into model
Merge pull request #8 from vincentstorme/refactor_vote_score

pull vote_count logic from view into model
update README with link to wiki
move user login and signup to header partial
merge conflicts with master
README confict test
Merge pull request #9 from malchak/master

Move login/signup logic to header partial inside of application.html
merge conflicts with most recent upstream master