First iteration: generate static website from static routes

[essenciary]

This is the simplest scenario.

[ ] Users add GenieStatic to their app/project
[ ] Then they call GenieStatic.build passing the path where they want to generate the static website
[ ] GenieStatic.build iterates over Genie.Router.routes() and pulls the full page at the route's URL (using HTTP.jl, taking into account the method [ie GET, POST, etc])
--> would it make sense to only include GET by default? We should research what other static generators do. But it doesn't make a lot of sense to include non-GET routes, as these are for creating/updating/deleting.
[ ] GenieStatic.build saves the pulled page creating the correct folders path if it doesn't exist (ex path /a/b/c should create folders "a", "b", "c"). If the route does not indicate a document name, the page should be saved as index.html
[ ] When it's done pulling and saving the pages, GenieStatic.build should copy the /public folder into the root of the saved website