Update to `npm install` command
Update to `npm install` command

fixes #1053

- npm install doesn't need a path to grunt, and fails on Windows if it has one
- submodule update is handled by grunt (albeit badly... but let's fix that!)

rollokb/Ghost,floofydoug/Ghost,TribeMedia/Ghost,Japh/Ghost,Kaenn/Ghost,olsio/Ghost,imjerrybao/Ghost,disordinary/Ghost,beautyOfProgram/Ghost,Elektro1776/javaPress,augbog/Ghost,jiachenning/Ghost,Japh/Ghost,thehogfather/Ghost,rameshponnada/Ghost,kmeurer/GhostAzureSetup,velimir0xff/Ghost,etdev/blog,rouanw/Ghost,ryansukale/ux.ryansukale.com,Jai-Chaudhary/Ghost,pbevin/Ghost,rouanw/Ghost,hnarayanan/narayanan.co,flpms/ghost-ad,ashishapy/ghostpy,delgermurun/Ghost,kmeurer/Ghost,ThorstenHans/Ghost,veyo-care/Ghost,neynah/GhostSS,riyadhalnur/Ghost,yangli1990/Ghost,syaiful6/Ghost,rafaelstz/Ghost,jparyani/GhostSS,ljhsai/Ghost,yundt/seisenpenji,cicorias/Ghost,nmukh/Ghost,tyrikio/Ghost,francisco-filho/Ghost,Loyalsoldier/Ghost,tanbo800/Ghost,memezilla/Ghost,ThorstenHans/Ghost,Xibao-Lv/Ghost,tmp-reg/Ghost,panezhang/Ghost,pensierinmusica/Ghost,PepijnSenders/whatsontheotherside,Brunation11/Ghost,zackslash/Ghost,theonlypat/Ghost,axross/ghost,panezhang/Ghost,ladislas/ghost,mdbw/ghost,gcamana/Ghost,mlabieniec/ghost-env,YY030913/Ghost,davidenq/Ghost-Blog,oimou-house/blog,pedroha/Ghost,devleague/uber-hackathon,ericbenson/GhostAzureSetup,achimos/ghost_as,IbrahimAmin/Ghost,shrimpy/Ghost,gleneivey/Ghost,jeonghwan-kim/Ghost,katrotz/blog.katrotz.space,optikalefx/Ghost,stridespace/Ghost,mttschltz/ghostblog,jgladch/taskworksource,SkynetInc/steam,hoxoa/Ghost,llv22/Ghost,GroupxDev/javaPress,kaychaks/kaushikc.org,virtuallyearthed/Ghost,mhhf/ghost-latex,gabfssilva/Ghost,alexandrachifor/Ghost,AnthonyCorrado/Ghost,novaugust/Ghost,allanjsx/Ghost,jorgegilmoreira/ghost,syaiful6/Ghost,dylanchernick/ghostblog,thehogfather/Ghost,barbastan/Ghost,Netazoic/bad-gateway,Coding-House/Ghost,Bunk/Ghost,v3rt1go/Ghost,STANAPO/Ghost,ashishapy/ghostpy,rito/Ghost,denzelwamburu/denzel.xyz,camilodelvasto/herokughost,ghostchina/Ghost.zh,laispace/laiblog,johngeorgewright/blog.j-g-w.info,omaracrystal/Ghost,greenboxindonesia/Ghost,neynah/GhostSS,Kikobeats/Ghost,vainglori0us/urban-fortnight,AileenCGN/Ghost,nneko/Ghost,llv22/Ghost,sangcu/Ghost,pathayes/FoodBlog,diogogmt/Ghost,skmezanul/Ghost,choskim/ghost_exp,DesenTao/Ghost,pollbox/ghostblog,ineitzke/Ghost,jgillich/Ghost,mohanambati/Ghost,ManRueda/Ghost,ngosinafrica/SiteForNGOs,rameshponnada/Ghost,GroupxDev/javaPress,atandon/Ghost,codeincarnate/Ghost,GarrethDottin/Habits-Design,RufusMbugua/TheoryOfACoder,mnitchie/Ghost,mohanambati/Ghost,ManRueda/manrueda-blog,velimir0xff/Ghost,bsansouci/Ghost,Dnlyc/Ghost,carlosmtx/Ghost,ClarkGH/Ghost,ghostchina/website,atandon/Ghost,lanffy/Ghost,hoxoa/Ghost,PDXIII/Ghost-FormMailer,daihuaye/Ghost,Elektro1776/javaPress,petersucks/blog,fredeerock/atlabghost,arvidsvensson/Ghost,fredeerock/atlabghost,hyokosdeveloper/Ghost,Dnlyc/Ghost,cobbspur/Ghost,lcamacho/Ghost,laispace/laiblog,e10/Ghost,sebgie/Ghost,dgem/Ghost,rchrd2/Ghost,andrewconnell/Ghost,rizkyario/Ghost,sfpgmr/Ghost,cwonrails/Ghost,camilodelvasto/localghost,tadityar/Ghost,sangcu/Ghost,edurangel/Ghost,liftup/ghost,Empeeric/justanidea,francisco-filho/Ghost,aschmoe/jesse-ghost-app,lf2941270/Ghost,ManRueda/manrueda-blog,pensierinmusica/Ghost,JulienBrks/Ghost,hnq90/Ghost,jaguerra/Ghost,vainglori0us/urban-fortnight,notno/Ghost,JonathanZWhite/Ghost,pedroha/Ghost,phillipalexander/Ghost,zeropaper/Ghost,kortemy/Ghost,sajmoon/Ghost,ygbhf/Ghost,GroupxDev/javaPress,TryGhost/Ghost,kevinansfield/Ghost,davidenq/Ghost-Blog,janvt/Ghost,TribeMedia/Ghost,metadevfoundation/Ghost,etdev/blog,ASwitlyk/Ghost,uploadcare/uploadcare-ghost-demo,wangjun/Ghost,ananthhh/Ghost,jiangjian-zh/Ghost,ivanoats/ivanstorck.com,davidblurton/salmondesign-old,Romdeau/Ghost,lukekhamilton/Ghost,yanntech/Ghost,laispace/laiblog,jamesyothers/Ghost,jamesyothers/Ghost,achimos/ghost_as,ryansukale/ux.ryansukale.com,ivanoats/ivanstorck.com,patterncoder/patterncoder,mikecastro26/ghost-custom,gleneivey/Ghost,PeterCxy/Ghost,lethalbrains/Ghost,ErisDS/Ghost,skleung/blog,dggr/Ghost-sr,lethalbrains/Ghost,duyetdev/islab,bosung90/Ghost,ericbenson/GhostAzureSetup,riyadhalnur/Ghost,carlosmtx/Ghost,choskim/Ghost,sunh3/Ghost,veyo-care/Ghost,pathayes/FoodBlog,Netazoic/bad-gateway,kortemy/Ghost,Azzurrio/Ghost,netputer/Ghost,melissaroman/ghost-blog,davegw/dgw-website,ineitzke/Ghost,Coding-House/Ghost,tmp-reg/Ghost,ignasbernotas/nullifer,DesenTao/Ghost,VillainyStudios/Ghost,ASwitlyk/Ghost,ITJesse/Ghost-zh,davidblurton/salmondesign-old,zackslash/Ghost,PDXIII/Ghost-FormMailer,carlyledavis/Ghost,sceltoas/Ghost,Rovak/Ghost,ladislas/ghost,etanxing/Ghost,Netazoic/bad-gateway,Polyrhythm/dolce,jgillich/Ghost,Elektro1776/javaPress,PeterCxy/Ghost,ckousik/Ghost,BlueHatbRit/Ghost,AlexKVal/Ghost,disordinary/Ghost,aexmachina/blog-old,NovaDevelopGroup/Academy,flomotlik/Ghost,freele/ghost,djensen47/Ghost,jomofrodo/ccb-ghost,weareleka/blog,kolorahl/Ghost,jin/Ghost,tksander/Ghost,TryGhost/Ghost,krahman/Ghost,djensen47/Ghost,Sing-Li/GhostSS,codeincarnate/Ghost,bisoe/Ghost,diogogmt/Ghost,lukaszklis/Ghost,load11/ghost,10hacks/blog,alanmoo/moo-on-the-web,woodyrew/Ghost,kaychaks/kaushikc.org,bbmepic/Ghost,dggr/Ghost-sr,kevinansfield/Ghost,mayconxhh/Ghost,RoopaS/demo-intern,stridespace/Ghost,jparyani/GhostSS,letsjustfixit/Ghost,KnowLoading/Ghost,letsjustfixit/Ghost,Gargol/Ghost,lukekhamilton/Ghost,SkynetInc/steam,jomahoney/Ghost,NikolaiIvanov/Ghost,imjerrybao/Ghost,FredericBernardo/Ghost,arvidsvensson/Ghost,RufusMbugua/TheoryOfACoder,TryGhost/Ghost,GarrethDottin/Habits-Design,adam-paterson/blog,kwangkim/Ghost,wemakeweb/Ghost,mlabieniec/ghost-env,developer-prosenjit/Ghost,leninhasda/Ghost,Trendy/Ghost,bisoe/Ghost,aroneiermann/GhostJade,Alxandr/Blog,praveenscience/Ghost,olsio/Ghost,kmeurer/Ghost,kwangkim/Ghost,wangjun/Ghost,flomotlik/Ghost,Trendy/Ghost,kaiqigong/Ghost,flpms/ghost-ad,Kaenn/Ghost,trunk-studio/Ghost,vloom/blog,beautyOfProgram/Ghost,jparyani/GhostSS,YY030913/Ghost,VillainyStudios/Ghost,klinker-apps/ghost,camilodelvasto/localghost,virtuallyearthed/Ghost,Sebastian1011/Ghost,smaty1/Ghost,Yarov/yarov,Yarov/yarov,prosenjit-itobuz/Ghost,choskim/GhostAzure,Feitianyuan/Ghost,vishnuharidas/Ghost,johnnymitch/Ghost,lukw00/Ghost,melissaroman/ghost-blog,ngosinafrica/SiteForNGOs,Japh/shortcoffee,julianromera/Ghost,NovaDevelopGroup/Academy,ManRueda/Ghost,SachaG/bjjbot-blog,adam-paterson/blog,rafaelstz/Ghost,rollokb/Ghost,cqricky/Ghost,bigertech/Ghost,bbmepic/Ghost,rizkyario/Ghost,Shauky/Ghost,alecho/Ghost,v3rt1go/Ghost,ManRueda/manrueda-blog,sebgie/Ghost,load11/ghost,karmakaze/Ghost,greyhwndz/Ghost,nneko/Ghost,duyetdev/islab,Azzurrio/Ghost,ITJesse/Ghost-zh,ananthhh/Ghost,javimolla/Ghost,situkangsayur/Ghost,johnnymitch/Ghost,thomasalrin/Ghost,phillipalexander/Ghost,Loyalsoldier/Ghost,singular78/Ghost,jeonghwan-kim/Ghost,alecho/Ghost,lukaszklis/Ghost,anijap/PhotoGhost,jamesslock/Ghost,woodyrew/Ghost,akveo/akveo-blog,mlabieniec/ghost-env,mayconxhh/Ghost,NovaDevelopGroup/Academy,javimolla/Ghost,bastianbin/Ghost,Kikobeats/Ghost,akveo/akveo-blog,ryanbrunner/crafters,Bunk/Ghost,rizkyario/Ghost,pollbox/ghostblog,BlueHatbRit/Ghost,daimaqiao/Ghost-Bridge,handcode7/Ghost,janvt/Ghost,rmoorman/Ghost,ghostchina/Ghost.zh,AnthonyCorrado/Ghost,bsansouci/Ghost,denzelwamburu/denzel.xyz,InnoD-WebTier/hardboiled_ghost,Jai-Chaudhary/Ghost,JonSmith/Ghost,bitjson/Ghost,tanbo800/Ghost,memezilla/Ghost,dqj/Ghost,etanxing/Ghost,tchapi/igneet-blog,Japh/shortcoffee,NamedGod/Ghost,dqj/Ghost,shannonshsu/Ghost,Gargol/Ghost,uniqname/everydaydelicious,ckousik/Ghost,10hacks/blog,zhiyishou/Ghost,icowan/Ghost,dbalders/Ghost,sergeylukin/Ghost,dbalders/Ghost,cysys/ghost-openshift,BayPhillips/Ghost,blankmaker/Ghost,barbastan/Ghost,ballPointPenguin/Ghost,exsodus3249/Ghost,NikolaiIvanov/Ghost,MadeOnMars/Ghost,tuan/Ghost,tidyui/Ghost,tandrewnichols/ghost,diancloud/Ghost,notno/Ghost,allspiritseve/mindlikewater,JohnONolan/Ghost,mattvh/Ghost,nakamuraapp/new-ghost,eduardojmatos/eduardomatos.me,davidmenger/nodejsfan,yundt/seisenpenji,cysys/ghost-openshift,mtvillwock/Ghost,k2byew/Ghost,gabfssilva/Ghost,blankmaker/Ghost,no1lov3sme/Ghost,jiangjian-zh/Ghost,xiongjungit/Ghost,obsoleted/Ghost,NodeJSBarenko/Ghost,choskim/GhostAzure,pbevin/Ghost,prosenjit-itobuz/Ghost,lf2941270/Ghost,ManRueda/Ghost,davidenq/Ghost-Blog,delgermurun/Ghost,bosung90/Ghost,Rovak/Ghost,dYale/blog,dylanchernick/ghostblog,zumobi/Ghost,Remchi/Ghost,lanffy/Ghost,zhiyishou/Ghost,cncodog/Ghost-zh-codog,vainglori0us/urban-fortnight,wemakeweb/Ghost,zumobi/Ghost,vlmhco/personal-blog,karmakaze/Ghost,javorszky/Ghost,augbog/Ghost,r1N0Xmk2/Ghost,wallmarkets/Ghost,jacostag/Ghost,psychobunny/Ghost,UsmanJ/Ghost,makapen/Ghost,schneidmaster/theventriloquist.us,Smile42RU/Ghost,sergeylukin/Ghost,johngeorgewright/blog.j-g-w.info,schematical/Ghost,telco2011/Ghost,thomasalrin/Ghost,JulienBrks/Ghost,PepijnSenders/whatsontheotherside,aschmoe/jesse-ghost-app,kortemy/Ghost,weareleka/blog,PaulBGD/Ghost-Plus,makapen/Ghost,smedrano/Ghost,hilerchyn/Ghost,jorgegilmoreira/ghost,smedrano/Ghost,shannonshsu/Ghost,hnq90/Ghost,cwonrails/Ghost,dai-shi/Ghost,optikalefx/Ghost,cqricky/Ghost,praveenscience/Ghost,qdk0901/Ghost,leonli/ghost,morficus/Ghost,telco2011/Ghost,UnbounDev/Ghost,daimaqiao/Ghost-Bridge,InnoD-WebTier/hardboiled_ghost,edsadr/Ghost,MrMaksimize/sdg1,trepafi/ghost-base,FredericBernardo/Ghost,mttschltz/ghostblog,javorszky/Ghost,SachaG/bjjbot-blog,nmukh/Ghost,MadeOnMars/Ghost,xiongjungit/Ghost,ErisDS/Ghost,r14r/fork_nodejs_ghost,scopevale/wethepeopleweb.org,developer-prosenjit/Ghost,mhhf/ghost-latex,allspiritseve/mindlikewater,epicmiller/pages,exsodus3249/Ghost,klinker-apps/ghost,manishchhabra/Ghost,jaswilli/Ghost,telco2011/Ghost,patrickdbakke/ghost-spa,chris-yoon90/Ghost,rwjblue/Ghost,devleague/uber-hackathon,edurangel/Ghost,singular78/Ghost,JohnONolan/Ghost,kevinansfield/Ghost,skleung/blog,sfpgmr/Ghost,PaulBGD/Ghost-Plus,dggr/Ghost-sr,no1lov3sme/Ghost,madole/diverse-learners,tadityar/Ghost,bastianbin/Ghost,r1N0Xmk2/Ghost,diancloud/Ghost,ljhsai/Ghost,schematical/Ghost,dymx101/Ghost,allanjsx/Ghost,shrimpy/Ghost,darvelo/Ghost,jomofrodo/ccb-ghost,ClarkGH/Ghost,rmoorman/Ghost,wallmarkets/Ghost,wspandihai/Ghost,Feitianyuan/Ghost,rchrd2/Ghost,devleague/uber-hackathon,jacostag/Ghost,kaiqigong/Ghost,ryanbrunner/crafters,handcode7/Ghost,ivantedja/ghost,ErisDS/Ghost,kolorahl/Ghost,tandrewnichols/ghost,ddeveloperr/Ghost,leonli/ghost,obsoleted/Ghost,carlyledavis/Ghost,benstoltz/Ghost,Brunation11/Ghost,jomofrodo/ccb-ghost,axross/ghost,ignasbernotas/nullifer,lukw00/Ghost,camilodelvasto/herokughost,bitjson/Ghost,jin/Ghost,cgiffard/Ghost,yangli1990/Ghost,tidyui/Ghost,jomahoney/Ghost,manishchhabra/Ghost,singular78/Ghost,STANAPO/Ghost,hyokosdeveloper/Ghost,schneidmaster/theventriloquist.us,metadevfoundation/Ghost,qdk0901/Ghost,cicorias/Ghost,sunh3/Ghost,allanjsx/Ghost,acburdine/Ghost,omaracrystal/Ghost,UsmanJ/Ghost,chris-yoon90/Ghost,ddeveloperr/Ghost,mnitchie/Ghost,liftup/ghost,sankumsek/Ghost-ashram,petersucks/blog,Netazoic/bad-gateway,LeandroNascimento/Ghost,Klaudit/Ghost,patterncoder/patterncoder,sajmoon/Ghost,dgem/Ghost,consoleblog/consoleblog,netputer/Ghost,Romdeau/Ghost,epicmiller/pages,andrewconnell/Ghost,Xibao-Lv/Ghost,stridespace/Ghost,vloom/blog,daihuaye/Ghost,yanntech/Ghost,rito/Ghost,aroneiermann/GhostJade,gcamana/Ghost,acburdine/Ghost,Kikobeats/Ghost,ygbhf/Ghost,novaugust/Ghost,lowkeyfred/Ghost,madole/diverse-learners,InnoD-WebTier/hardboiled_ghost,ryanorsinger/tryghost,trunk-studio/Ghost,Remchi/Ghost,mattchupp/blog,avh4/blog.avh4.net,novaugust/Ghost,psychobunny/Ghost,Sebastian1011/Ghost,KnowLoading/Ghost,influitive/crafters,katrotz/blog.katrotz.space,neynah/GhostSS,sceltoas/Ghost,sifatsultan/js-ghost,hnarayanan/narayanan.co,theonlypat/Ghost,Smile42RU/Ghost,e10/Ghost,claudiordgz/Ghost,cncodog/Ghost-zh-codog,mtvillwock/Ghost,ghostchina/Ghost-zh,davegw/dgw-website,ghostchina/Ghost-zh,daimaqiao/Ghost-Bridge,cncodog/Ghost-zh-codog,mdbw/ghost,AlexKVal/Ghost,JonathanZWhite/Ghost,anijap/PhotoGhost,darvelo/Ghost,lowkeyfred/Ghost,claudiordgz/Ghost,hilerchyn/Ghost,dYale/blog,julianromera/Ghost,leonli/ghost,jaswilli/Ghost,dai-shi/Ghost,jamesslock/Ghost,greyhwndz/Ghost,BayPhillips/Ghost,UnbounDev/Ghost,dymx101/Ghost,tksander/Ghost,JonSmith/Ghost,situkangsayur/Ghost,edsadr/Ghost,benstoltz/Ghost,cysys/ghost-openshift,icowan/Ghost,chevex/undoctrinate,mattchupp/blog,jaguerra/Ghost,katiefenn/Ghost,Alxandr/Blog,sifatsultan/js-ghost,zeropaper/Ghost,influitive/crafters,JohnONolan/Ghost,Klaudit/Ghost,wspandihai/Ghost,mattvh/Ghost,cwonrails/Ghost,zuphu/GhostBlog,floofydoug/Ghost,leninhasda/Ghost,Aaron1992/Ghost,jorgegilmoreira/ghost,r14r/fork_nodejs_ghost,skmezanul/Ghost,choskim/Ghost,NamedGod/Ghost,greenboxindonesia/Ghost,k2byew/Ghost,letsjustfixit/Ghost,uploadcare/uploadcare-ghost-demo,sebgie/Ghost,Alxandr/Blog,IbrahimAmin/Ghost,dbalders/Ghost,acburdine/Ghost,LeandroNascimento/Ghost,thinq4yourself/Unmistakable-Blog,smaty1/Ghost,morficus/Ghost,davidmenger/nodejsfan,jiachenning/Ghost,ballPointPenguin/Ghost,thinq4yourself/Unmistakable-Blog,Kaenn/Ghost,mohanambati/Ghost,tyrikio/Ghost