Add tests to ensure that the face (puppet yardoc) works from end to
end. In other words, ensure that when given a module, puppet yardoc can
successfully evaluate the .pp and .rb files present in the module and
produce the expected HTML.
Prior to this commit there was no testing around the pops component.
Since most of the API in the pops component is private, there aren't
very many things to test, so add just a few test cases.
Additionally rename a previous spec file and make some changes to
the Gemfile.
Hailee Kenney