* travis config
* Updated gemlock for htmlproofer.
* Note about installing nokogiri with bundle install.
* htmlproofer for cibuild
* Restricting the htmlproofer test to ignore /blog/
* Removed travis branch from the whitelist.
* (Update) Dependencies: Add bundler and Gemfile to handle ruby dependencies
* (Update) Dependencies: Move jekyll-multiple-languages-plugin into Gemfile instead of using a git submodule
* (Doc) README: Adjust note about jekyll-multiple-language-plugin