sso_*: prepare v3.0.0 release (buzzfeed#313)

* bump version and generate static content for v3.0.0 release

* *: documentation update

Merge pull request buzzfeed#259 from buzzfeed/jusshersmith-2.1.0-release

sso_*: 2.1.0 release version bump

Merge pull request buzzfeed#233 from buzzfeed/jusshersmith-sso-releas…

…e-2-0-0

sso: bump version and generate static content for v2.0.0 release

Merge pull request buzzfeed#169 from buzzfeed/jusshersmith-release-1-2-0

sso: bump version and generate static content for v1.2.0 release

Merge pull request buzzfeed#130 from buzzfeed/release-1-1-0

Bump version files and regenerate static content, for v1.1.0 release.

Merge pull request buzzfeed#23 from buzzfeed/quickstart-tweaks

docs: add quickstart & document google provider setup