>> Adds column category to listings table, and fixes tests to account for listing category.
>> Applys a specific category class to each listing div in the listing index view
Merge pull request #79 from felguerez/layout_listing_styling

Layout listing styling
Merge branch 'development' of https://github.com/felguerez/aircycle into all_listings
Updates listings index view
>> Adds isotope to the listings view
Additional changes to 'all listings' view styling
Merge pull request #80 from felguerez/all_listings

All listings
Merge branch 'development' of github.com:felguerez/top-secret-final-project into layout_listing_styling
adds isotope.js
Merge pull request #81 from felguerez/all_listings

All listings
Merge branch 'development' of github.com:felguerez/top-secret-final-project into layout_listing_styling
adds more seed data to make isotope look pretty
adds infinitescroll.js
Merge branch 'development' of https://github.com/felguerez/aircycle into all_listings
merges all listings and dev
>> Changes styling on listings index. Changes color scheme.
>> Ready to be merged to dev
Merge branch 'all_listings' of github.com:felguerez/top-secret-final-project into layout_listing_styling
Styles 'show user' view(s), makes CSS SASSier, moves header into a partial vieww and general styling updates.

* Style user profile view. Includes two listings – user's listings, user's reviews
* Moves header (nav) into partial
* Adds route, controller action and view to routes.rb for show users/:id/reviews/ (users#show_reviews, users/show_reviews)
* Styling updates galore.