Need help getting Zapier scripting example working in JSFiddle

Zapier has a scripting language but no way to really test in real-time. So I want to use their example for my own connection/data.

I have an application that uses XML for their API output, Zapier requires JSON to function. So it requires me to convert from XML to JSON using the link below.

Here is the link to Zapier's scripting example to convert XML to JSON:

Zapier - MadMimi XML to JSON

How can I get that working in JSFiddle? The reason I want to get it into JSFiddle is so I can manipulate my XML output.

My XML output looks like this:

XML Output on PasteBin