Setup instructions could use some more detail

I imagine, like myself, most people are going to find this plugin directly (based on a casual recommendation). Myself, and those people, would benefit from pointers to HTML Edge Cache setup on CF (which on GH is also pretty sparse and presume familiarity with service workers) as well as requirements like paid/free service work accounts.

Finally, it might be worth explicitly stating this plugin has no settings screen, it’s either on/off.