Provide option to use Cache unserialized

[guizoxxv]

When using the Cache facade, the values are stored serialized. I was using the Redis facade to execute native commands like APPEND. The problem is that if I call Cache::get('my-key') if fails as it tries to unserialize it.

It would be nice to be able to set 'serialize' => false like in the array store in the config/cache.php file or to enable/disable serializing when calling the Cache::get or Cache::put methods.