Add note to upgrading docs on new config file options.
Add note to upgrading docs on new config file options.

MauroMrod/jekyll,MjAbuz/jekyll,gkunwar/gkunwar.github.io,cyberid41/jekyll,goragod/jekyll,QuinntyneBrown/jekyll,Kinghack/kinghack.github.com,garvitr/jekyll,x-way/jekyll,xcatliu/jekyllcn,ajhit406/jekyll,oresmus/jekyll,Strangehill/jekyll,yihangho/jekyll,ryanshaw/jekyll,eloyesp/jekyll,vidbina/jekyll,iRoxx/jekyll,daniel-beck/jekyll,wentixiaogege/jekyll,tamouse/jekyll,desidude03/jekyll,tobscure/jekyll,ramoslin02/jekyll,fengsmith/jekyll,FlyingWHR/jekyll,alihalabyah/jekyll,bsmr-ruby/jekyll,tomasdiez/jekyll,wentixiaogege/jekyll,christophermanning/jekyll,stevecrozz/jekyll,sferik/jekyll,LeuisKen/jekyllcn,sasongkojati/jekyll,xiebinhqy/jklly_china,noikiy/jekyll,liukaijv/jekyll,trungvothanh/jekyll,bsmr-ruby/jekyll,shliujing/jekyll,x-way/jekyll,naughtyboy83/jekyll,LuoPX-15510486969/jekyll,martynbm/jekyll,ReachingOut/jekyll,liukaijv/jekyll,royalwang/jekyll,getandpost/jekyll.github.io,pheuko/jekyll,ZainRizvi/jekyll,ryanshaw/jekyll,emarchak/tomes-jekyll,tomjohnson1492/jekyll,yhironaka/yhironaka.github.io,johnnycastilho/jekyll,omeripek/jekyll,larryfox/jekyll,isathish/jekyll,vcgato29/jekyll,isathish/jekyll,supriyantomaftuh/jekyll,alex-kovac/jekyll,FlyingWHR/jekyll,greent2008/jekyll,xiaoshaozi52/jekyll,ReachingOut/jekyll,winndows/jekyll,digideskio/jekyll,richsoni/jekyll,omeripek/jekyll,tugberkugurlu/jekyll,isathish/jekyll,brint/jekyll,fulldecent/jekyll,zsyed91/jekyll,AaronSikes/jekyll,rovrevik/jekyll,kimeng/jekyll,gencer/jekyll,xiebinhqy/jklly_china,krahman/jekyll,gencer/jekyll,sasongkojati/jekyll,princeofdarkness76/jekyll,hartmel/jekyll,leichunxin/jekyll,Wirachmat/jekyll,brint/jekyll,QuinntyneBrown/jekyll,howkj1/jekyll,indraj/jekyll,indraj/jekyll,gkunwar/gkunwar.github.io,gaosboy/jekyll,noikiy/jekyll,shuber2/jekyll,iRoxx/jekyll,nickg33/jekyll,matuzo/jekyll,rajrathore/jekyll,foocoder/jekyll,saitodisse/jekyll,princeofdarkness76/jekyll,jmknoll/jekyll,stomar/jekyll,wadaries/jekyll,likong/jekyll,aarvay/jekyll,codeclimate-testing/jekyll,Strangehill/jekyll,alfredxing/jekyll,princeofdarkness76/jekyll,jekyll/jekyll,AtekiRyu/jekyll,penchan1218/jekyllcn,thejameskyle/jekyll,rongl/jekyll,Tiger66639/jekyll,sanxore/sanxore.github.com,christophermanning/jekyll,imaustink/jekyll,alex-kovac/jekyll,penchan1218/jekyllcn,oresmus/jekyll,tobscure/jekyll,teju111/jekyll,jeffkole/jekyll,fulldecent/jekyll,chinayin/jekyll,Teino1978-Corp/jekyll,fengsmith/jekyllcn,brint/jekyll,floydpraveen/jekyll,royalwang/jekyll,x-way/jekyll,jmptrader/jekyll,chrisfinazzo/jekyll,winndows/jekyll,ajhit406/jekyll,Strangehill/jekyll,AnanthaRajuC/jekyll,AtekiRyu/jekyll,dangaute/eng,honger05/jekyllcn,pmarsceill/jekyll,fengsmith/jekyllcn,hiteshsuthar/jekyll,dangaute/eng,stomar/jekyll,ZainRizvi/jekyll,rajrathore/jekyll,jekyll/jekyll,EddieDow/jekyll,alex-kovac/jekyll,schaazzz/jekyll,julienbourdeau/jekyll,chrisfinazzo/jekyll,pmarsceill/jekyll,1gitGrey/jekyll,drobati/jekyll,jmptrader/jekyll,codeclimate-testing/jekyll,jaybe-jekyll/jekyll,zsyed91/jekyll,richsoni/jekyll,ZDroid/jekyll,LeuisKen/jekyllcn,ls2uper/jekyll,ewinkler/jekyll,drobati/jekyll,matuzo/jekyll,akoeplinger/jekyll,garvitr/jekyll,gynter/jekyll,gencer/jekyll,kimeng/jekyll,tillgrallert/jekyll,ducktyper/jekyll,xtymichael/jekyll,matuzo/jekyll,ramoslin02/jekyll,bsmr-ruby/jekyll,ducktyper/jekyll,darwin/jekyll,imaustink/jekyll,nfagerlund/jekyll,QuinntyneBrown/jekyll,rasa2011/rasa2011.github.io,foocoder/jekyll,xiebinhqy/jklly_china,desidude03/jekyll,SQS2/Test,adilapapaya/jekyll,CheekyFE/jekyll,jaybe-jekyll/jekyll,mrb/jekyll,nemotan/jekyll,rovrevik/jekyll,tomjohnson1492/jekyll,nickg33/jekyll,rongl/jekyll,tugberkugurlu/jekyll,stomar/jekyll,superve/jekyll,CPVPLachlan/CPVP-Blog,lcustodio/lcustodio.github.io_base,alex-kovac/jekyll,marrujoalex/jekyll,MjAbuz/jekyll,darwin/jekyll,Teino1978-Corp/Teino1978-Corp-jekyll,daniel-beck/jekyll,supriyantomaftuh/jekyll,ajhit406/jekyll,superve/jekyll,goodtouch/jekyll,tareq-s/jekyll,nathanhorrigan1/webdeveloper,0x00evil/jekyll,Wirachmat/jekyll,LuoPX-15510486969/jekyll,martynbm/jekyll,xcatliu/jekyllcn,rlugojr/jekyll,digideskio/jekyll,naughtyboy83/jekyll,liukaijv/jekyll,chiyodad/jekyll,backendeveloper/jekyll,dezon/jekyll,vcgato29/jekyll,abhilashhb/jekyll,SQS2/Test,Teino1978-Corp/jekyll,lcustodio/lcustodio.github.io_base,ewinkler/jekyll,desidude03/jekyll,Kinghack/kinghack.github.com,kimeng/jekyll,kinlane/jekyll,ryanshaw/jekyll,jaroot32/jekyll,floydpraveen/jekyll,lcustodio/lcustodio.github.io_base,Kinghack/kinghack.github.com,kuangyeheng/jekyll,m2candre/jekyll,brint/jekyll,thejameskyle/jekyll,jmhardison/jekyll,Wirachmat/jekyll,gynter/jekyll,tugberkugurlu/jekyll,tareq-s/jekyll,pmarsceill/jekyll,jeffkole/jekyll,mrb/jekyll,vcgato29/jekyll,foocoder/jekyll,xcatliu/jekyllcn,getandpost/jekyll.github.io,teju111/jekyll,rovrevik/jekyll,likong/jekyll,PepSalehi/jekyll,yihangho/jekyll,derekgottlieb/jekyll,doubleday/jekyll,derekgottlieb/jekyll,dansef/jekyll,naughtyboy83/jekyll,jeffkole/jekyll,codeclimate-testing/jekyll,likong/jekyll,floydpraveen/jekyll,fengsmith/jekyllcn,darwin/jekyll,tomjohnson1492/jekyll,saitodisse/je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htmelvis/jekyll,tillgrallert/jekyll,vidbina/jekyll,jekyll/jekyll,mrb/jekyll,krishnakalyan3/jekyll,goodtouch/jekyll,xantage/jekyll,fulldecent/jekyll,Teino1978-Corp/Teino1978-Corp-jekyll,LuoPX-15510486969/jekyll,backendeveloper/jekyll,wadaries/jekyll,anthonyrosengren/grasshoppergathering2.github-io,nasht00/jekyll,CheekyFE/jekyll,derekgottlieb/jekyll,nemotan/jekyll,martynbm/jekyll