Update readme and related information

Special thanks to all contributors, listed below!

This also serves as acknowlegement by the individuals listed that their new contributions were made under agreement of both MIT and Apache-2.0 license.

Name|Email|Organization

---|---|---

Scott Greenwood|greenwoodms@ornl.gov|Oak Ridge National Laboratory

Vineet Kumar|kumarv@ornl.gov|Oak Ridge National Laboratory

Wesley Williams|williamswc@ornl.gov|Oak Ridge National Laboratory

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