Updated node version text in README.md
Updated node version text in README.md

no issue

- update README to match the new version support
jorgegilmoreira/ghost,jamesslock/Ghost,e10/Ghost,jaswilli/Ghost,weareleka/blog,weareleka/blog,RufusMbugua/TheoryOfACoder,letsjustfixit/Ghost,Kaenn/Ghost,duyetdev/islab,daihuaye/Ghost,ManRueda/manrueda-blog,STANAPO/Ghost,veyo-care/Ghost,bosung90/Ghost,ErisDS/Ghost,novaugust/Ghost,adam-paterson/blog,delgermurun/Ghost,STANAPO/Ghost,obsoleted/Ghost,Elektro1776/javaPress,rizkyario/Ghost,telco2011/Ghost,daimaqiao/Ghost-Bridge,mohanambati/Ghost,jomahoney/Ghost,dbalders/Ghost,JulienBrks/Ghost,ballPointPenguin/Ghost,NovaDevelopGroup/Academy,Yarov/yarov,epicmiller/pages,cwonrails/Ghost,vainglori0us/urban-fortnight,jamesslock/Ghost,lf2941270/Ghost,mohanambati/Ghost,singular78/Ghost,tidyui/Ghost,Kikobeats/Ghost,jorgegilmoreira/ghost,dggr/Ghost-sr,JohnONolan/Ghost,ManRueda/manrueda-blog,ckousik/Ghost,ErisDS/Ghost,chris-yoon90/Ghost,JohnONolan/Ghost,leninhasda/Ghost,Smile42RU/Ghost,cwonrails/Ghost,jaswilli/Ghost,zumobi/Ghost,ngosinafrica/SiteForNGOs,ignasbernotas/nullifer,acburdine/Ghost,telco2011/Ghost,klinker-apps/ghost,ManRueda/manrueda-blog,olsio/Ghost,olsio/Ghost,Gargol/Ghost,anijap/PhotoGhost,TryGhost/Ghost,acburdine/Ghost,ballPointPenguin/Ghost,acburdine/Ghost,JonSmith/Ghost,delgermurun/Ghost,ivantedja/ghost,javorszky/Ghost,disordinary/Ghost,Kaenn/Ghost,cicorias/Ghost,stridespace/Ghost,sebgie/Ghost,benstoltz/Ghost,kevinansfield/Ghost,patterncoder/patterncoder,novaugust/Ghost,mayconxhh/Ghost,cicorias/Ghost,Elektro1776/javaPress,lukekhamilton/Ghost,ignasbernotas/nullifer,bosung90/Ghost,chris-yoon90/Ghost,karmakaze/Ghost,JohnONolan/Ghost,sangcu/Ghost,Kikobeats/Ghost,stridespace/Ghost,bitjson/Ghost,dbalders/Ghost,pollbox/ghostblog,disordinary/Ghost,PeterCxy/Ghost,leninhasda/Ghost,patterncoder/patterncoder,hnarayanan/narayanan.co,bitjson/Ghost,janvt/Ghost,kevinansfield/Ghost,vainglori0us/urban-fortnight,letsjustfixit/Ghost,ashishapy/ghostpy,etanxing/Ghost,augbog/Ghost,rizkyario/Ghost,syaiful6/Ghost,Xibao-Lv/Ghost,pollbox/ghostblog,PeterCxy/Ghost,lf2941270/Ghost,TryGhost/Ghost,jorgegilmoreira/ghost,AlexKVal/Ghost,lukekhamilton/Ghost,jomahoney/Ghost,kaychaks/kaushikc.org,veyo-care/Ghost,NovaDevelopGroup/Academy,etanxing/Ghost,vainglori0us/urban-fortnight,ghostchina/Ghost-zh,cwonrails/Ghost,javorszky/Ghost,hnarayanan/narayanan.co,AlexKVal/Ghost,dggr/Ghost-sr,ngosinafrica/SiteForNGOs,Elektro1776/javaPress,dggr/Ghost-sr,syaiful6/Ghost,RufusMbugua/TheoryOfACoder,Trendy/Ghost,adam-paterson/blog,chevex/undoctrinate,karmakaze/Ghost,duyetdev/islab,SkynetInc/steam,janvt/Ghost,dqj/Ghost,ghostchina/Ghost-zh,singular78/Ghost,dbalders/Ghost,obsoleted/Ghost,leonli/ghost,rizkyario/Ghost,telco2011/Ghost,letsjustfixit/Ghost,SkynetInc/steam,ErisDS/Ghost,barbastan/Ghost,JonSmith/Ghost,GroupxDev/javaPress,tidyui/Ghost,ashishapy/ghostpy,GroupxDev/javaPress,leonli/ghost,Trendy/Ghost,anijap/PhotoGhost,barbastan/Ghost,kevinansfield/Ghost,leonli/ghost,sangcu/Ghost,sebgie/Ghost,augbog/Ghost,MadeOnMars/Ghost,sunh3/Ghost,GroupxDev/javaPress,BlueHatbRit/Ghost,klinker-apps/ghost,Kaenn/Ghost,MadeOnMars/Ghost,mayconxhh/Ghost,Yarov/yarov,zumobi/Ghost,Xibao-Lv/Ghost,stridespace/Ghost,dqj/Ghost,novaugust/Ghost,JulienBrks/Ghost,ckousik/Ghost,benstoltz/Ghost,Smile42RU/Ghost,petersucks/blog,kaychaks/kaushikc.org,Kikobeats/Ghost,handcode7/Ghost,e10/Ghost,mohanambati/Ghost,TryGhost/Ghost,epicmiller/pages,petersucks/blog,BlueHatbRit/Ghost,daimaqiao/Ghost-Bridge,singular78/Ghost,Gargol/Ghost,handcode7/Ghost,NovaDevelopGroup/Academy,sunh3/Ghost,daihuaye/Ghost,sebgie/Ghost,daimaqiao/Ghost-Bridge