Clarify instructions for setting up the S3 integration.
Clarify instructions for setting up the S3 integration.

These instructions still aren't great due to #291, but at least this
is clear about how to get this working.

reyha/zulip,umkay/zulip,kou/zulip,peiwei/zulip,isht3/zulip,dawran6/zulip,KingxBanana/zulip,sharmaeklavya2/zulip,dattatreya303/zulip,dattatreya303/zulip,shubhamdhama/zulip,showell/zulip,punchagan/zulip,umkay/zulip,tommyip/zulip,rht/zulip,umkay/zulip,Juanvulcano/zulip,paxapy/zulip,Diptanshu8/zulip,hackerkid/zulip,mohsenSy/zulip,PhilSk/zulip,umkay/zulip,j831/zulip,cosmicAsymmetry/zulip,umkay/zulip,sup95/zulip,umkay/zulip,sharmaeklavya2/zulip,jackrzhang/zulip,christi3k/zulip,jphilipsen05/zulip,christi3k/zulip,christi3k/zulip,TigorC/zulip,brockwhittaker/zulip,samatdav/zulip,Galexrt/zulip,verma-varsha/zulip,alliejones/zulip,vikas-parashar/zulip,verma-varsha/zulip,Vallher/zulip,peguin40/zulip,zacps/zulip,brockwhittaker/zulip,kou/zulip,jackrzhang/zulip,Galexrt/zulip,joyhchen/zulip,ahmadassaf/zulip,karamcnair/zulip,kou/zulip,dwrpayne/zulip,jphilipsen05/zulip,karamcnair/zulip,eeshangarg/zulip,alliejones/zulip,vikas-parashar/zulip,zacps/zulip,arpith/zulip,krtkmj/zulip,christi3k/zulip,Galexrt/zulip,showell/zulip,synicalsyntax/zulip,JPJPJPOPOP/zulip,synicalsyntax/zulip,souravbadami/zulip,zacps/zulip,Galexrt/zulip,AZtheAsian/zulip,JPJPJPOPOP/zulip,tommyip/zulip,PhilSk/zulip,ahmadassaf/zulip,calvinleenyc/zulip,peguin40/zulip,eeshangarg/zulip,susansls/zulip,esander91/zulip,souravbadami/zulip,brockwhittaker/zulip,j831/zulip,verma-varsha/zulip,Juanvulcano/zulip,arpith/zulip,ryansnowboarder/zulip,reyha/zulip,Frouk/zulip,rht/zulip,esander91/zulip,cosmicAsymmetry/zulip,Jianchun1/zulip,rht/zulip,kou/zulip,vikas-parashar/zulip,AZtheAsian/zulip,rht/zulip,zulip/zulip,sonali0901/zulip,dhcrzf/zulip,JPJPJPOPOP/zulip,paxapy/zulip,rishig/zulip,hackerkid/zulip,peiwei/zulip,jrowan/zulip,rishig/zulip,ryanbackman/zulip,rht/zulip,krtkmj/zulip,rishig/zulip,zulip/zulip,verma-varsha/zulip,synicalsyntax/zulip,mohsenSy/zulip,jphilipsen05/zulip,showell/zulip,ryanbackman/zulip,brainwane/zulip,grave-w-grave/zulip,andersk/zulip,grave-w-grave/zulip,SmartPeople/zulip,j831/zulip,Jianchun1/zulip,aakash-cr7/zulip,vaidap/zulip,sonali0901/zulip,calvinleenyc/zulip,rishig/zulip,niftynei/zulip,peguin40/zulip,jainayush975/zulip,vabs22/zulip,vabs22/zulip,AZtheAsian/zulip,jphilipsen05/zulip,mahim97/zulip,aakash-cr7/zulip,isht3/zulip,eeshangarg/zulip,Juanvulcano/zulip,synicalsyntax/zulip,mohsenSy/zulip,Jianchun1/zulip,blaze225/zulip,alliejones/zulip,brockwhittaker/zulip,mahim97/zulip,tommyip/zulip,sonali0901/zulip,hackerkid/zulip,AZtheAsian/zulip,dwrpayne/zulip,Vallher/zulip,aakash-cr7/zulip,dhcrzf/zulip,timabbott/zulip,tommyip/zulip,punchagan/zulip,dawran6/zulip,ahmadassaf/zulip,amanharitsh123/zulip,shubhamdhama/zulip,souravbadami/zulip,blaze225/zulip,susansls/zulip,Jianchun1/zulip,Diptanshu8/zulip,ryansnowboarder/zulip,calvinleenyc/zulip,TigorC/zulip,Frouk/zulip,Frouk/zulip,zulip/zulip,ahmadassaf/zulip,dwrpayne/zulip,jphilipsen05/zulip,esander91/zulip,dhcrzf/zulip,synicalsyntax/zulip,verma-varsha/zulip,sup95/zulip,paxapy/zulip,brainwane/zulip,karamcnair/zulip,calvinleenyc/zulip,hackerkid/zulip,eeshangarg/zulip,brainwane/zulip,timabbott/zulip,ryansnowboarder/zulip,dattatreya303/zulip,punchagan/zulip,Diptanshu8/zulip,sup95/zulip,SmartPeople/zulip,dhcrzf/zulip,TigorC/zulip,peiwei/zulip,peiwei/zulip,tommyip/zulip,reyha/zulip,alliejones/zulip,paxapy/zulip,shubhamdhama/zulip,joyhchen/zulip,vikas-parashar/zulip,grave-w-grave/zulip,peguin40/zulip,timabbott/zulip,jainayush975/zulip,zulip/zulip,Diptanshu8/zulip,Juanvulcano/zulip,Frouk/zulip,KingxBanana/zulip,Vallher/zulip,TigorC/zulip,SmartPeople/zulip,KingxBanana/zulip,amanharitsh123/zulip,brockwhittaker/zulip,tommyip/zulip,jainayush975/zulip,dwrpayne/zulip,peiwei/zulip,dawran6/zulip,SmartPeople/zulip,arpith/zulip,dhcrzf/zulip,jphilipsen05/zulip,arpith/zulip,krtkmj/zulip,jrowan/zulip,vaidap/zulip,blaze225/zulip,kou/zulip,mahim97/zulip,niftynei/zulip,ryanbackman/zulip,sup95/zulip,grave-w-grave/zulip,mohsenSy/zulip,amanharitsh123/zulip,karamcnair/zulip,paxapy/zulip,reyha/zulip,jainayush975/zulip,Jianchun1/zulip,Vallher/zulip,sonali0901/zulip,christi3k/zulip,sup95/zulip,reyha/zulip,reyha/zulip,Diptanshu8/zulip,jrowan/zulip,vikas-parashar/zulip,dwrpayne/zulip,cosmicAsymmetry/zulip,ryanbackman/zulip,dwrpayne/zulip,grave-w-grave/zulip,peiwei/zulip,calvinleenyc/zulip,ahmadassaf/zulip,ryansnowboarder/zulip,brainwane/zulip,samatdav/zulip,jrowan/zulip,j831/zulip,vaidap/zulip,susansls/zulip,Frouk/zulip,alliejones/zulip,esander91/zulip,Juanvulcano/zulip,Galexrt/zulip,andersk/zulip,susansls/zulip,vikas-parashar/zulip,KingxBanana/zulip,ryanbackman/zulip,brainwane/zulip,jrowan/zulip,zacps/zulip,timabbott/zulip,eeshangarg/zulip,PhilSk/zulip,showell/zulip,zulip/zulip,shubhamdhama/zulip,andersk/zulip,vabs22/zulip,rishig/zulip,hackerkid/zulip,amyliu345/zulip,Diptanshu8/zulip,verma-varsha/zulip,karamcnair/zulip,amyliu345/zulip,sonali0901/zulip,Galexrt/zulip,susansls/zulip,niftynei/zulip,paxapy/zulip,jackrzhang/zulip,synicalsyntax/zulip,mahim97/zulip,Vallher/zulip,blaze225/zulip,dattatreya303/zulip,cosmicAsymmetry/zulip,JPJPJPOPOP/zulip,dawran6/zulip,timabbott/zulip,niftynei/zulip,andersk/zulip,tommyip/zulip,aakash-cr7/zulip,brockwhittaker/zulip,dawran6/zulip,krtkmj/zulip,jainayush975/zulip,calvinleenyc/zulip,Galexrt/zulip,eeshangarg/zulip,souravbadami/zulip,arpith/zulip,Vallher/zulip,jrowan/zulip,hackerkid/zulip,esander91/zulip,Jianchun1/zulip,PhilSk/zulip,shubhamdhama/zulip,brainwane/zulip,umkay/zulip,amyliu345/zulip,SmartPeople/zulip,joyhchen/zulip,sup95/zulip,SmartPeople/zulip,Juanvulcano/zulip,showell/zulip,Frouk/zulip,zulip/zulip,peguin40/zulip,grave-w-grave/zulip,jackrzhang/zulip,zulip/zulip,joyhchen/zulip,kou/zulip,alliejones/zulip,amanharitsh123/zulip,alliejones/zulip,vaidap/zulip,sharmaeklavya2/zulip,ryansnowboarder/zulip,krtkmj/zulip,amyliu345/zulip,christi3k/zulip,samatdav/zulip,vabs22/zulip,mahim97/zulip,shubhamdhama/zulip,dawran6/zulip,rht/zulip,punchagan/zulip,krtkmj/zulip,TigorC/zulip,PhilSk/zulip,esander91/zulip,dhcrzf/zulip,amyliu345/zulip,mahim97/zulip,esander91/zulip,timabbott/zulip,hackerkid/zulip,showell/zulip,sonali0901/zulip,blaze225/zulip,ahmadassaf/zulip,vaidap/zulip,kou/zulip,amanharitsh123/zulip,dwrpayne/zulip,jackrzhang/zulip,niftynei/zulip,j831/zulip,rishig/zulip,eeshangarg/zulip,rht/zulip,souravbadami/zulip,zacps/zulip,sharmaeklavya2/zulip,jackrzhang/zulip,vabs22/zulip,TigorC/zulip,amanharitsh123/zulip,isht3/zulip,andersk/zulip,isht3/zulip,andersk/zulip,brainwane/zulip,karamcnair/zulip,isht3/zulip,mohsenSy/zulip,AZtheAsian/zulip,krtkmj/zulip,niftynei/zulip,andersk/zulip,samatdav/zulip,dattatreya303/zulip,Vallher/zulip,peiwei/zulip,synicalsyntax/zulip,j831/zulip,KingxBanana/zulip,showell/zulip,peguin40/zulip,samatdav/zulip,jackrzhang/zulip,arpith/zulip,ryansnowboarder/zulip,punchagan/zulip,samatdav/zulip,sharmaeklavya2/zulip,JPJPJPOPOP/zulip,punchagan/zulip,susansls/zulip,vaidap/zulip,cosmicAsymmetry/zulip,ryanbackman/zulip,isht3/zulip,AZtheAsian/zulip,timabbott/zulip,aakash-cr7/zulip,Frouk/zulip,JPJPJPOPOP/zulip,ryansnowboarder/zulip,PhilSk/zulip,vabs22/zulip,punchagan/zulip,shubhamdhama/zulip,dattatreya303/zulip,joyhchen/zulip,aakash-cr7/zulip,mohsenSy/zulip,blaze225/zulip,cosmicAsymmetry/zulip,sharmaeklavya2/zulip,ahmadassaf/zulip,joyhchen/zulip,amyliu345/zulip,dhcrzf/zulip,karamcnair/zulip,rishig/zulip,jainayush975/zulip,souravbadami/zulip,KingxBanana/zulip,zacps/zulip