Updating browser quickstart to align more with node quickstart.

Since @clarle updated the node quickstart, I updated the browser quickstart to be not only more in line with the node quickstart but also update the example to do an actual translation. The example is meant to be simple and easy to understand right away. I also included a link to a Gist with the full working example on the client.
+1 this is very confusing so far.

I think we're presenting people with all these CLI steps without mentioning ahead of time an overview of what they need to do. Maybe it would be better to show them an example, then walk them through how to build it. This is exactly what we've done for YUI examples in the past.