Generate IAM certs for users on AWS

1. openssl genrsa 1024 > username-env-pk.pem
1. pk stands for private key
2. openssl req -new -x509 -nodes -sha1 -days 365 -key username-env-pk.pem -outform PEM > username-env-cert.pem
1. lasts for 365
3. Paste username-env-cert.pem in to the AWS Signing Certificates area for that user
4. Give user both username-env-pk.pem and username-env-cert.pem, and wish them luck