Add release notes and improve packaging and README for 1.0.
Review Request #9815 — Created March 20, 2018 and submitted
This prepares for the rbintegrations 1.0 release by adding new release
notes detailing all the new integrations, updating the README to better
describe the package and point to useful resources, bumping the version,
and adding better package metadata.
Built the docs. Checked for spelling errors and made sure all links
pointed to the right locations.
Rendered the README and checked to make sure its contents and links were
Built the package and inspected the metadata for the description.