Fixup typo in comment block.

Fix a couple of typos in the comment block.
Merge pull request #1628 from amigorich/typo-fix

Fixup typo in comment block.
tweak how autoloaders are called. adjust phpunit bootstrap.
boot the application on all artisan commands.
Add date validation messages
Merge pull request #1642 from alexwhitman/date-validation-messages

Add date validation messages