Move Neevo\Nette to separate repo.

Neevo extension for Nette Framework has been moved to separate
repository at http://github.com/smasty/neevo-nette-extension.
Use Composer for installation in your Nette application:

{
	"require": {
		"smasty/neevo-nette-extension": "*"
	}
}
Composer: suggests Nette extension
Release version 2.3.0