chore: release 1.0.0 (#360)
chore: release 1.0.0 (#360)

* updated CHANGELOG.md

* updated package.json

* updated samples/package.json

GoogleCloudPlatform/nodejs-docs-samples,GoogleCloudPlatform/nodejs-docs-samples,GoogleCloudPlatform/nodejs-docs-samples,GoogleCloudPlatform/nodejs-docs-samples