Add PHPSpec config file and dependency
use APP_KEY from environment if available for the secret key
Tweak some paths again.
Use environment options in database config.
Merge pull request #3132 from winglian/develop

use APP_KEY from environment if available for the secret key
Update value.
Make use of autoload-dev
Merge pull request #3187 from GrahamForks/autoload-dev

Make use of autoload-dev
 Fixed artisan:optimize crash
Merge pull request #3188 from anhskohbo/patch-3

Fixed artisan optimize crash
Use the "Env" helper which has boolean support.
Use string "true".
Merge pull request #3046 from driesvints/feature/phpspec-config-file

Add PHPSpec config file and dependency
Add expire option by default.
Update cache configuration.