Add .ruby-version file to reduce errors and help contributors know what to expect.
Vagrant requires at least Ruby 2.0
Add Ruby 2.1.2 to Travis build matrix
Bump vagrant and vagrant-berkshelf versions to latest and specify a vagrant 1.5 compatible box
Add Gemfile.lock file to version control.
Move all vagrant plugins to into :plugins group. Add cookbook name to metadata.
Adjust Travis config for Ruby 2.1.2
Merge pull request #50 from andrewhavens/feature/add-ruby-version

Get this working with newer versions of Vagrant