v1.0.1

• Fix for Issue #7: Use aws-sdk modular gems.
• switch to circle2 config

1.0.0

• Add support for configurable AssumeRole DurationSeconds via AWS_ROLE_DURATION_SECONDS environment variable.
• Bump version to 1.0.0, as we're using this daily in many places.

v0.3.0: Merge pull request #4 from jniesen/suppoort_external_id

Enable the use of an External ID for assuming a role