Bump gems

* pull foodcritic from github to avoid nokogiri install issues
* update exclude paterns in .rubocop.yml
* fix deprecations in spec_helper
* Rubocop => RuboCop in latest version
Move non-soloist gems into :development group
Bump bundled gems
Bump to latest foodcritic

Avoids github Gem dependency, not working on Travis
Merge pull request #3 from pivotal-sprout/ap/refresh-dependencies

Refresh Dependencies