handle exceptions more gracefully
use UrbanDictionary's JSON API
better feedback for lack of results
bump version to 0.10.0
pin Cinch dependency to 2.x

Instead of depending on >= 2.x, depend on 2.x specifically.
bump version to 0.10.1

The git repository was out of sync with the latest pushed gem and a gem
with the version 0.10.0 already exists.