fixed broken background image css, now remains fixed. added CHANGELOG
added comment_count and author to SlashdotPosting, mild refactoring
deleted excess scaffolding files, added slashdot rescue to api, prepped code for url-models addition
deleted excess scaffolding files, added slashdot rescue to api, prepped code for url-models addition
added Url model and associations. Moved slashdot_api to own file and expanded rake task. General refactoring and more comments