Force new RSpec expect syntax
Replace faker by ffaker

Faster and more possibilities
Create User, Post and Comment factories
Add User, Post and Comment models factories spec
Merge pull request #50 from phildionne/feature/factories

Factories
Add Travis config file
Add Post like action & link

I am not a restful maniac at all, I would have done it through a GET like hacker news do, but it's so easy with rails 4 helpers!
Add emotions to Comment model
Add controller & link to like comments
Add points_count presenter for comments
Add emotions counter cache on comments