Update required IAM permissions in our docs
Closes #8 (closed)
The IAM policies specified in our README file were insufficient. This updates the documentation to suggest adding an inline JSON policy that encompasses all required permissions.
I have also altered the stack name in serverless.yml. I believe this name being shared with another project is what caused us to overlook this error in the first place (the role was already created for gitlab-example so we didn't see the missing IAM requirements to create the role).