Add PHPSpec config file and dependency
 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.
Add connection settings to cache config.