Added simplecov coverage support.
Most of Article model OK now.
CSS assets borrowed from existing project, likely to be useful shortly. Application layout now Haml rather than ERB.
Articles *were* done, except for the parts that weren't. Articles have a title now. Links and links_text fields properly validated.

However, see the newly-opened issue.
Draper is a sweet way to do presenter-style decorators.
Early whack at new utility/link_container spec, class and internals module.