Use the full rubygems url as a Gemfile source as the symbol is deprecated
Use earlier version of Rubygems to avoid Bundler fatal error
Merge pull request #36 from modsognir/fix_gemspec_specs

Fix breaking specs on Travis
Extract version finders out into new classes
Cleaned up finder code duplication
Add documentation to chef and gemspec finders
Refactored LibRb finder
Renamed Finders::Finder to Finders::GenericFile
Removed seperate finder methods