Update travis config.

Signed-off-by: crynobone <crynobone@gmail.com>
Improve docblock and update uses.

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

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

Conflicts:
	.travis.yml
	src/Auth/Acl/Container.php
	src/Auth/Acl/Factory.php
	src/Auth/AuthServiceProvider.php