fix for https://github.com/catalinpan/aws-ecr-proxy/issues/7, registry ID not being used to renew token

Merge pull request #6 from IdentityAutomation/master

fix to allow running under ECS using IAM task role

Merge pull request #5 from toneill818/master

Added option to speicy a registry id

Update README.md

kubernetes example daemonSet

update to support iam

updated README

fix iam silent grep

fix entrypoint for iam

added iam support for key and secret

upgraded to the latest stable versions of awscli and nginx

updated readme with aws iam region config

reconfigured AWS IAM detection as per @cloudowski pull request, reduce initial aws cli calls to one for all variables