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

correct.
Built the package and inspected the metadata for the description.