Refactored Comments model
Edited refresh methods to reset instance variables
Edited User karma method
Refactored User #posts to create Post objects
Refactored User #comments to create Comment objects
Refactored Post #comments to create Comment objects
Commented out HackerNews unnecessary code
Refactored scrape_posts and scrape_comments into Parser module
Small code refactors
Moved db files into db folder
Edited implicit instance variable calls to explicit
Moved page parsing out of initialize methods
Moved files into a lib folder