Updated to use Database_url
include database_url
Uses Dossier::ConnectionUrl to parse DATABASE_URL
Fix adapter name when postgres
Added ConnectionUrl spec and dry'ed up spec/dossier/configuration_spec.rb
Fixed database name in test
refactored lib/dossier/configuration.rb
Fixed a test causing Travis to fail
Merge pull request #35 from justbaker/master

Default to DATABASE_URL env variable