Tweak I0 of idea box
Remove sqlite3 reference from I0, idea box
Tweak I0, idea box
Explain ports in IdeaBox
Tweak ideabox towards modular sinatra
Make `create` endpoint in IdeaBox RESTful

Rather than `POST /create`, use `POST /`.
Explain HTML is just text in IdeaBox
Implement save and POST / on ideabox