Update Padrino to 0.11.4

* Silence I18n Warning (wherever it came from)
* Update matchers - deprecated `.find('title').native.text`
Update .travis.yml while we're breaking things anyways…
Pin Ruby version in Gemfile
Merge pull request #44 from bascht/feature/padrino-0.11.4

Update Padrino to 0.11.4 & Ruby to 2.1.0