Regenerate gemspec for version 2.1.5

Regenerate gemspec for version 2.1.4

Regenerate gemspec for version 2.1.3

Regenerate gemspec for version 2.1.2

Regenerate gemspec for version 2.1.1

Regenerate gemspec for version 2.1.0

Merge pull request kitchenplan#51 from kitchenplan/cleanup

Kitchenplan 2.0 changes: stability, maintainability, and more configuration over recipes

Package gem dependencies to prevent failing bundle install runs

Mavericks compatible!