Remove invalid usage.

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

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

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

Conflicts:
	src/Memory/EloquentMemoryHandler.php