cleaning up lint errors + tiny changes

Hi Josh, just a bit of cleanup for the new version of puppet-lint. If you want to merge, cool. If you don't, also cool.

For the CHANGELOG.md, that looks autogenerated by something. If so, I don't know by what. I did some googling but came up empty (there were some node.js things but they didn't look right).

Have a good day.

-Shawn
If I had looked at your Rakefile I would have seen that you are/were purposefully ignoring this lint warning. Which really only applies to puppet 2.6 and below, so who cares? I will revert this change, but comment back in the line: 
#PuppetLint.configuration.send('disable_class_inherits_from_params_class')
unless you don't want that.

Sorry to waste your time on this item.