Configure and verify activerecord.

Configure production and development databases, with activrecord. Verify with two passing specs. 'sinatra/activerecord/rake' tasks verified. shoulda-matchers removed, not working in sinatra.
Initial design of Rubycon, a social linkblog.

Add tests for application flow; Display five links on home page; add subscription form mailing list; and add a link from home page to suggestion form and back.
Edited readme

Corrected typos!
Able to visit link suggestion page and submit a link.
Able to add suggested link.