hljs.registerLanguage('css', require('highlight.js/lib/languages/css'))
hljs.registerLanguage('diff', require('highlight.js/lib/languages/diff'))
hljs.registerLanguage('dockerfile', require('highlight.js/lib/languages/dockerfile'))
+ hljs.registerLanguage('elixir', require('highlight.js/lib/languages/elixir'))
hljs.registerLanguage('go', require('highlight.js/lib/languages/go'))
hljs.registerLanguage('groovy', require('highlight.js/lib/languages/groovy'))
hljs.registerLanguage('haskell', require('highlight.js/lib/languages/haskell'))