Improve docblock and usage.

Signed-off-by: crynobone <crynobone@gmail.com>
Merge branch '2.1' into 2.2

Signed-off-by: crynobone <crynobone@gmail.com>

Conflicts:
	composer.json
	src/Facile/FacileServiceProvider.php
	src/Facile/Template/Driver.php