add puppet 3.5, 3.6 testing
notify client and/or server if enabled
add ruby 2.1 checks
Merge pull request #189 from jlambert121/puppet_vers

add puppet 3.5, 3.6 testing
Merge pull request #190 from jlambert121/issue_171

notify client and/or server if enabled
Merge git://github.com/sensu/sensu-puppet