Better workaround for bundler issue #5346

Author: jabenninghoff

Gemfile

@@ -1,10 +1,10 @@
 source 'https://rubygems.org'
 
-require 'json'
-require 'open-uri'
+# use Kernel.require as a workaround per https://github.com/bundler/bundler/issues/5346
+Kernel.require 'json'
+Kernel.require 'open-uri'
 version = JSON.parse(open('https://pages.github.com/versions.json').read)
 
 ruby version['ruby']
 gem 'github-pages', version['github-pages'], group: :jekyll_plugins
 gem 'html-proofer', group: :htmlproofer
-gem 'json', group: :travis_ci # requiring json a second time fixes Travis CI builds

Gemfile.lock

@@ -209,7 +209,6 @@ PLATFORMS
 DEPENDENCIES
   github-pages (= 116)
   html-proofer
-  json
 
 RUBY VERSION
    ruby 2.3.3p222