First commit.

I've been working on this for the past 4-3 hours. Something just hit my mind
and I decided to try it out.

This is a trivial PHP application based on dependency injection.

The focus, however, isn't on dependency injection. It's on the mix of
dependency injection and some non-OOP ways of using PHP which could turn out
to be interesting.

I'm avoiding some features of PHP on purpose: heavy use of classes, autoload,
include_once or require_once (require is being used all over; include is
planned whenever it won't hurt).

Some adjustments are in order. So are more texts about this.