Add missing year to article publish dates
Docs for the new approach to page caching

Nesta's built-in support has gone, replaced by the `sinatra-cache` gem.
Replace shotgun with mr-sparkle

I cannot believe how long it's taken me to get around to this.
mr-sparkle is awesome!
Upgrade to Nesta 0.10.0
Mention yaml-metadata plugin in metadata reference
Document the 'Link text' metadata
Be specific about 'bundle install'
The #path_to helper is preferred over #url

See issue 103.