Add Ruby upgrade instructions
Add Ruby upgrade instructions

k4zzk/gitlabhq,OlegGirko/gitlab-ce,mrb/gitlabhq,Burick/gitlabhq,jrjang/gitlabhq,Kambda/Mobbr,jirutka/gitlabhq,darkrasid/gitlabhq,stellamiranda/mobbr-gitlabhq,jaepyoung/gitlabhq,Devin001/gitlabhq,theodi/gitlabhq,jaepyoung/gitlabhq,jrjang/gitlabhq,liyakun/gitlabhq,ayufan/gitlabhq,adaiguoguo/gitlab_globalserarch,folpindo/gitlabhq,screenpages/gitlabhq,daiyu/gitlab-zh,jvanbaarsen/gitlabhq,julianengel/gitlabhq,tempbottle/gitlabhq,pjknkda/gitlabhq,atomaka/gitlabhq,NuLL3rr0r/gitlabhq,pkallberg/tjenare,8thcolor/testing-public-gitlabhq,zrbsprite/gitlabhq,akumetsuv/gitlab,123Haynes/gitlabhq,dplarson/gitlabhq,Exeia/gitlabhq,eliasp/gitlabhq,martinma4/gitlabhq,whluwit/gitlabhq,joalmeid/gitlabhq,gorgee/gitlabhq,bozaro/gitlabhq,Kambda/Mobbr,sue445/gitlabhq,martinma4/gitlabhq,ayufan/gitlabhq,axilleas/gitlabhq,sonalkr132/gitlabhq,shinexiao/gitlabhq,allysonbarros/gitlabhq,ngpestelos/gitlabhq,SVArago/gitlabhq,it33/gitlabhq,pulkit21/gitlabhq,folpindo/gitlabhq,sideci-sample/sideci-sample-gitlabhq,rumpelsepp/gitlabhq,mavimo/gitlabhq,daiyu/gitlab-zh,dreampet/gitlab,rhels/gitlabhq,jaepyoung/gitlabhq,bladealslayer/gitlabhq,Tyrael/gitlabhq,szechyjs/gitlabhq,dvrylc/gitlabhq,folpindo/gitlabhq,Datacom/gitlabhq,fendoudeqingchunhh/gitlabhq,ordiychen/gitlabhq,jvanbaarsen/gitlabhq,zBMNForks/gitlabhq,dukex/gitlabhq,koreamic/gitlabhq,atomaka/gitlabhq,Kambda/mobbr-gitlabhq,copystudy/gitlabhq,tk23/gitlabhq,dreampet/gitlab,vjustov/gitlabhq,dwrensha/gitlabhq,fpgentil/gitlabhq,screenpages/gitlabhq,nmav/gitlabhq,bbodenmiller/gitlabhq,ZeoAlliance/gitlabhq,MauriceMohlek/gitlabhq,ikappas/gitlabhq,chadyred/gitlabhq,mavimo/gitlabhq,martinma4/gitlabhq,fscherwi/gitlabhq,pkgr/gitlabhq,rhels/gitlabhq,stoplightio/gitlabhq,Exeia/gitlabhq,LytayTOUCH/gitlabhq,123Haynes/gitlabhq,theonlydoo/gitlabhq,hzy001/gitlabhq,michaKFromParis/sparkslab,since2014/gitlabhq,cncodog/gitlab,hacsoc/gitlabhq,since2014/gitlabhq,bbodenmiller/gitlabhq,tempbottle/gitlabhq,phinfonet/mobbr-gitlabhq,cinderblock/gitlabhq,mente/gitlabhq,8thcolor/testing-public-gitlabhq,michaKFromParis/gitlabhq,Kambda/mobbr-gitlabhq,Datacom/gitlabhq,fantasywind/gitlabhq,fgbreel/gitlabhq,williamherry/gitlabhq,sue445/gitlabhq,NKMR6194/gitlabhq,stanhu/gitlabhq,delkyd/gitlabhq,Burick/gitlabhq,TheWatcher/gitlabhq,joalmeid/gitlabhq,stellamiranda/mobbr-gitlabhq,zBMNForks/gitlabhq,MauriceMohlek/gitlabhq,dplarson/gitlabhq,duduribeiro/gitlabhq,yuyue2013/ss,ksoichiro/gitlabhq,koreamic/gitlabhq,NKMR6194/gitlabhq,shinexiao/gitlabhq,yonglehou/gitlabhq,fantasywind/gitlabhq,fantasywind/gitlabhq,t-zuehlsdorff/gitlabhq,sekcheong/gitlabhq,Soullivaneuh/gitlabhq,ibiart/gitlabhq,k4zzk/gitlabhq,pulkit21/gitlabhq,stanhu/gitlabhq,yatish27/gitlabhq,mathstuf/gitlabhq,t-zuehlsdorff/gitlabhq,eliasp/gitlabhq,yfaizal/gitlabhq,since2014/gitlabhq,NARKOZ/gitlabhq,phinfonet/mobbr-gitlabhq,iiet/iiet-git,aaronsnyder/gitlabhq,bozaro/gitlabhq,WSDC-NITWarangal/gitlabhq,revaret/gitlabhq,zBMNForks/gitlabhq,cui-liqiang/gitlab-ce,childbamboo/gitlabhq,htve/GitlabForChinese,delkyd/gitlabhq,fpgentil/gitlabhq,yfaizal/gitlabhq,flashbuckets/gitlabhq,kemenaran/gitlabhq,folpindo/gitlabhq,Telekom-PD/gitlabhq,jirutka/gitlabhq,icedwater/gitlabhq,eliasp/gitlabhq,fearenales/gitlabhq,liyakun/gitlabhq,tim-hoff/gitlabhq,Tyrael/gitlabhq,yulchitaj/TEST3,kotaro-dev/gitlab-6-9,DanielZhangQingLong/gitlabhq,youprofit/gitlabhq,OtkurBiz/gitlabhq,lvfeng1130/gitlabhq,bigsurge/gitlabhq,rebecamendez/gitlabhq,allysonbarros/gitlabhq,youprofit/gitlabhq,jairzh/gitlabhq-sfdc,eliasp/gitlabhq,LytayTOUCH/gitlabhq,SkyWei/gitlabhq,sakishum/gitlabhq,daiyu/gitlab-zh,nmav/gitlabhq,SkyWei/gitlabhq,allistera/gitlabhq,Keystion/gitlabhq,koreamic/gitlabhq,ibiart/gitlabhq,iiet/iiet-git,bigsurge/gitlabhq,copystudy/gitlabhq,martijnvermaat/gitlabhq,it33/gitlabhq,yama07/gitlabhq,tim-hoff/gitlabhq,aaronsnyder/gitlabhq,Devin001/gitlabhq,DanielZhangQingLong/gitlabhq,rebecamendez/gitlabhq,hzy001/gitlabhq,pjknkda/gitlabhq,fscherwi/gitlabhq,michaKFromParis/gitlabhqold,ttasanen/gitlabhq,hq804116393/gitlabhq,revaret/gitlabhq,yatish27/gitlabhq,8thcolor/testing-public-gitlabhq,aaronsnyder/gitlabhq,darkrasid/gitlabhq,yuyue2013/ss,Razer6/gitlabhq,initiummedia/gitlabhq,mathstuf/gitlabhq,Devin001/gitlabhq,NuLL3rr0r/gitlabhq,ttasanen/gitlabhq,stoplightio/gitlabhq,duduribeiro/gitlabhq,williamherry/gitlabhq,zBMNForks/gitlabhq,whluwit/gitlabhq,jrjang/gitlab-ce,johnmyqin/gitlabhq,williamherry/gitlabhq,NARKOZ/gitlabhq,kemenaran/gitlabhq,ordiychen/gitlabhq,lvfeng1130/gitlabhq,revaret/gitlabhq,daiyu/gitlab-zh,jaepyoung/gitlabhq,hq804116393/gitlabhq,vjustov/gitlabhq,rumpelsepp/gitlabhq,yfaizal/gitlabhq,whluwit/gitlabhq,gopeter/gitlabhq,H3Chief/gitlabhq,lvfeng1130/gitlabhq,fpgentil/gitlabhq,cinderblock/gitlabhq,mathstuf/gitlabhq,bbodenmiller/gitlabhq,gorgee/gitlabhq,hq804116393/gitlabhq,sakishum/gitlabhq,dukex/gitlabhq,sonalkr132/gitlabhq,williamherry/gitlabhq,kemenaran/gitlabhq,cui-liqiang/gitlab-ce,Exeia/gitlabhq,ksoichiro/gitlabhq,per-garden/gitlabhq,nguyen-tien-mulodo/gitlabhq,yatish27/gitlabhq,lvfeng1130/gitlabhq,whluwi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