html - Display API data

Question

I'm very new to web development. I wrote a Sinatra API that returns XML output. How can I display that on front end, using HTML5, or something simple?

This is the output from api call: curl server/getRecordings

<recordings>
    <recording>
        <recordingID>
             1375368828193
        </recordingID>
        <processed>false</processed>
     </recording>
</recordings>