Request: add another example, but showing how to use a gem

[rubyFeedback]

Right now we have this:

Quick Example: Ruby on Web browser
Create and save index.html page with the following contents:

And this works, I tested it.

Could a second example be added, but one that also shows how to embed a simple gem?

May be enough for a "hello world", or any other simple gem for that matter.

I would like to see the syntax, for making use of gems as add-on.