Update readme.adoc
Update readme.adoc

Minor changes to language, and adding a permissions section.
dalbhanj/kubernetes-aws-workshop,dalbhanj/kubernetes-aws-workshop,dalbhanj/kubernetes-aws-workshop,arun-gupta/kubernetes-aws-workshop,arun-gupta/kubernetes-aws-workshop,arun-gupta/kubernetes-aws-workshop,arun-gupta/kubernetes-aws-workshop,dalbhanj/kubernetes-aws-workshop