update queue config with sqs example.
added Str alias.
Update app/config/session.php
default queue should be synchronous.
Fixes the validation error message for regex validation rule
Merge pull request #1721 from zackkitzmiller/patch-1

Default queue should be synchronous.
Merge pull request #1739 from Bering/regex-validation-message

Fixes the validation error message for regex validation rule
added form service provider and aliases.
Add sqs to list of supported drivers

Just forgotten I presume.
Merge pull request #1765 from driesvints/develop

Add sqs to list of supported drivers