This PR changes the Travis configuration to make sure it is using the same version of JavaScript as developers, and also changes the gemspec of govuk_tech_docs so that the newest version of autoprefixer-rails is used.
Together these changes allow the Travis builds to work correctly. Bumping autoprefixer-rails is not enough, because otherwise Travis will use Node.js v8.12.0 and autoprefixer will complain that the version of Node is too old.
Fixes #230.
This PR changes the Travis configuration to make sure it is using the same version of JavaScript as developers, and also changes the gemspec of
govuk_tech_docsso that the newest version of autoprefixer-rails is used.Together these changes allow the Travis builds to work correctly. Bumping
autoprefixer-railsis not enough, because otherwise Travis will use Node.js v8.12.0 and autoprefixer will complain that the version of Node is too old.