It is the responsibility of each member to keep the assigned code on the registered URL at all times (read also the section on Automated Management, below). Failure to install or maintain the code can result in suspension and eventual removal. The initial email you received after submitting to this ring gave information on getting the code. You can also get it by following these instructions. Click on your site's title once you find this ring's title in the left column. Once in the edit screen, click "Get Navigation Code".
You have the choice of the JavaScript, which serves up all rings associated with that stack or individual HTML codes. Which you choose is up to you. Just ensure your site tests "working" after the code is installed (test can be run from the edit page you were on earlier).