[Autoloading] Use PSR-4 instead PSR-0
[Autoloading] Use PSR-4 instead PSR-0

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | yes
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets |
| License       | MIT
| Doc PR        |

Ref:
https://getcomposer.org/doc/04-schema.md#psr-4

damianociarla/DCSRatingBundle,damianociarla/DCSRatingBundle,damianociarla/DCSRatingBundle