Added a Micro Plan

Since launch, I've been talking with possible clients, but as of now no one has started the subscription. I can tell people are interested in the service, but probably the entry price is too high considering that no one knows the service yet, and also they're giving access to their store. Today I created a new Micro plan, and entry-level plan with limited requests, to act as an insurance of a store, for emergencies or last-minute fixes.