Implement PHP 5.4 embedded webserver. Coolio!

Squashed commit of the following:

commit a8980523df18efdb12b0eacf07c7867def2a9f51
Author: Marco Sampellegrini <m@rcosa.mp>
Date:   Sat Jun 8 21:25:30 2013 +0200

    Edit README.

commit 9a58154c82542f49cc78645d68486426e426bbac
Author: Marco Sampellegrini <m@rcosa.mp>
Date:   Sat Jun 8 21:10:25 2013 +0200

    Fix routing in embedded webserver.

commit e9897fffcac380eec5bb487552d644f3f617a4fe
Author: Marco Sampellegrini <m@rcosa.mp>
Date:   Sat Jun 8 18:45:52 2013 +0200

    Fix uri trailing slash.

commit 86c5b7c34e74cc15b8b0d6a55c33042ef8195b7c
Author: Marco Sampellegrini <m@rcosa.mp>
Date:   Sat Jun 8 18:27:09 2013 +0200

    Add router for PHP 5.4