I have a Creatavist / Atavist subscription service setup ready to go and need to interface with my Infusionsoft CRM. Basically just need to apply a tag when a prospect subscribes to the subscription service and becomes a customer. . Has anyone done this before? Are there any developers in the Infusionsoft community already familiar with Atavist? Do tell me this is easy 
thanks
This is the Creatavist Developer docs which may help with my question.
I would send a developer to look at our Developer docs: Home · Atavist/developer Wiki · GitHub. These docs walk through the essential steps. You could also let them know that Atavist custom elements – such as custom blocks, title designs, and navigation types – are web components built with Polymer, consisting of HTML markup, Sass, Polymer element definitions, and some JSON that describes what aspects of the navigation type are configurable by users.