Fix command 'install' without arguments
Fix command 'install' without arguments

alex-dixon/gitbook,xcv58/gitbook,webwlsong/gitbook,JozoVilcek/gitbook,lucciano/gitbook,jocr1627/gitbook,gencer/gitbook,xxxhycl2010/gitbook,vehar/gitbook,megumiteam/documentation,codepiano/gitbook,a-moses/gitbook,gaearon/gitbook,Abhikos/gitbook,athiruban/gitbook,JohnTroony/gitbook,palerdot/gitbook,2390183798/gitbook,wewelove/gitbook,grokcoder/gitbook,guiquanz/gitbook,athiruban/gitbook,hongbinz/gitbook,palerdot/gitbook,tshoper/gitbook,rohan07/gitbook,switchspan/gitbook,intfrr/gitbook,FKV587/gitbook,bradparks/gitbook,mautic/documentation,haamop/documentation,hongbinz/gitbook,grokcoder/gitbook,rohan07/gitbook,Keystion/gitbook,qingying5810/gitbook,sudobashme/gitbook,FKV587/gitbook,shibe97/gitbook,ferrior30/gitbook,justinleoye/gitbook,escopecz/documentation,yaonphy/SwiftBlog,sunlianghua/gitbook,OriPekelman/gitbook,gdbooks/gitbook,intfrr/gitbook,minghe/gitbook,iamchenxin/gitbook,kamyu104/gitbook,nycitt/gitbook,xiongjungit/gitbook,boyXiong/gitbook,tzq668766/gitbook,snowsnail/gitbook,xxxhycl2010/gitbook,sudobashme/gitbook,mruse/gitbook,nycitt/gitbook,alex-dixon/gitbook,jocr1627/gitbook,bradparks/gitbook,tshoper/gitbook,youprofit/gitbook,shibe97/gitbook,hujianfei1989/gitbook,CN-Sean/gitbook,ZachLamb/gitbook,GitbookIO/gitbook,CN-Sean/gitbook,codepiano/gitbook,npracht/documentation,haamop/documentation,mautic/documentation,OriPekelman/gitbook,lucciano/gitbook,escopecz/documentation,2390183798/gitbook,boyXiong/gitbook,gaearon/gitbook,mruse/gitbook,jasonslyvia/gitbook,vehar/gitbook,jasonslyvia/gitbook,iamchenxin/gitbook,wewelove/gitbook,strawluffy/gitbook,gencer/gitbook,ryanswanson/gitbook,webwlsong/gitbook,minghe/gitbook,sunlianghua/gitbook,ZachLamb/gitbook,npracht/documentation,iflyup/gitbook,megumiteam/documentation,qingying5810/gitbook,JohnTroony/gitbook,guiquanz/gitbook,thelastmile/gitbook,youprofit/gitbook,switchspan/gitbook,gdbooks/gitbook,thelastmile/gitbook,kamyu104/gitbook,snowsnail/gitbook,a-moses/gitbook,iflyup/gitbook,xcv58/gitbook,ferrior30/gitbook,hujianfei1989/gitbook,justinleoye/gitbook,xiongjungit/gitbook,tzq668766/gitbook