Use yajl-ruby 1.2.2 (now with 2.4 support) (#6007)
Use yajl-ruby 1.2.2 (now with 2.4 support) (#6007)

Merge pull request 6007
chrisfinazzo/jekyll,rasa2011/rasa2011.github.io,tomjohnson1492/jekyll,alex-kovac/jekyll,yhironaka/yhironaka.github.io,tillgrallert/jekyll,x-way/jekyll,getandpost/jekyll.github.io,ryanshaw/jekyll,gencer/jekyll,tillgrallert/jekyll,rasa2011/rasa2011.github.io,tillgrallert/jekyll,tillgrallert/jekyll,Strangehill/jekyll,Strangehill/jekyll,x-way/jekyll,getandpost/jekyll.github.io,jaybe-jekyll/jekyll,ryanshaw/jekyll,alex-kovac/jekyll,jaybe-jekyll/jekyll,jaybe-jekyll/jekyll,ryanshaw/jekyll,jaybe-jekyll/jekyll,jekyll/jekyll,tillgrallert/jekyll,tomjohnson1492/jekyll,gencer/jekyll,Strangehill/jekyll,rasa2011/rasa2011.github.io,fulldecent/jekyll,chrisfinazzo/jekyll,ryanshaw/jekyll,tomjohnson1492/jekyll,jekyll/jekyll,jekyll/jekyll,jekyll/jekyll,gencer/jekyll,chrisfinazzo/jekyll,gencer/jekyll,alex-kovac/jekyll,fulldecent/jekyll,alex-kovac/jekyll,Strangehill/jekyll,fulldecent/jekyll,alex-kovac/jekyll,x-way/jekyll,Strangehill/jekyll,chrisfinazzo/jekyll,tomjohnson1492/jekyll,x-way/jekyll,gencer/jekyll,getandpost/jekyll.github.io,fulldecent/jekyll,tomjohnson1492/jekyll