Move description from docs into code sample (#630)
Move description from docs into code sample (#630)

As part of making the GCF docs language-agnostic, we are removing language-specific comments from the text and putting them into the code samples instead as code comments.
GoogleCloudPlatform/nodejs-docs-samples,GoogleCloudPlatform/nodejs-docs-samples,GoogleCloudPlatform/nodejs-docs-samples,GoogleCloudPlatform/nodejs-docs-samples