Change to 2.2.5 instead of 2.2.2
Change to 2.2.5 instead of 2.2.2

We don't need 2.2.2 exactly, switching to 2.2.5 shaves a solid 30 seconds off build time, as it is preinstalled on travis
darwin/jekyll,tillgrallert/jekyll,tomjohnson1492/jekyll,getandpost/jekyll.github.io,xiebinhqy/jklly_china,jekyll/jekyll,xiebinhqy/jklly_china,rlugojr/jekyll,alfredxing/jekyll,fulldecent/jekyll,jaybe-jekyll/jekyll,noikiy/jekyll,alex-kovac/jekyll,noikiy/jekyll,ryanshaw/jekyll,xiebinhqy/jklly_china,rasa2011/rasa2011.github.io,tomjohnson1492/jekyll,jekyll/jekyll,tillgrallert/jekyll,yhironaka/yhironaka.github.io,alex-kovac/jekyll,Strangehill/jekyll,Strangehill/jekyll,ryanshaw/jekyll,gencer/jekyll,rasa2011/rasa2011.github.io,darwin/jekyll,ZDroid/jekyll,alfredxing/jekyll,fulldecent/jekyll,x-way/jekyll,fulldecent/jekyll,noikiy/jekyll,chrisfinazzo/jekyll,Strangehill/jekyll,getandpost/jekyll.github.io,jekyll/jekyll,ZDroid/jekyll,chrisfinazzo/jekyll,jaybe-jekyll/jekyll,darwin/jekyll,tomjohnson1492/jekyll,tillgrallert/jekyll,Strangehill/jekyll,rasa2011/rasa2011.github.io,gencer/jekyll,jaybe-jekyll/jekyll,rlugojr/jekyll,xiebinhqy/jklly_china,gencer/jekyll,ryanshaw/jekyll,x-way/jekyll,getandpost/jekyll.github.io,jekyll/jekyll,gencer/jekyll,rlugojr/jekyll,alex-kovac/jekyll,alfredxing/jekyll,jaybe-jekyll/jekyll,rlugojr/jekyll,x-way/jekyll,gencer/jekyll,x-way/jekyll,darwin/jekyll,ZDroid/jekyll,fulldecent/jekyll,Strangehill/jekyll,alex-kovac/jekyll,noikiy/jekyll,ryanshaw/jekyll,alfredxing/jekyll,tillgrallert/jekyll,chrisfinazzo/jekyll,tomjohnson1492/jekyll,tillgrallert/jekyll,alex-kovac/jekyll,tomjohnson1492/jekyll,chrisfinazzo/jekyll