Spec for article content.
Allows redefinition of title with metatag.
Allows specification of custom meta tags.
Search by id and metatags. Chages search api.
Uses find_all when searching for multiple items.
Changes api method names and introduces search by date.
New style hashes
Search by date uses the same api as other searches.
Spec showing that search is narrowed by date.
Version bump to 0.1.0