minor #155 Allow to install "knplabs/knp-paginator-bundle:^5.0" (phansys)

This PR was merged into the master branch.

Discussion
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The changes between version 4 and 5 seem fully compatible with the features that we implement:
* https://github.com/KnpLabs/KnpPaginatorBundle/releases/tag/v5.0.0
* KnpLabs/KnpPaginatorBundle@v4.1.0...v5.0.0

Commits
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d053de2 Allow to install "knplabs/knp-paginator-bundle:^5.0"

Author: phansys

composer.json

@@ -28,7 +28,7 @@
         "php": "^5.6 || ^7.0",
         "doctrine/doctrine-bundle": "^1.4 || ^2.0",
         "doctrine/orm": "^2.4.8",
-        "knplabs/knp-paginator-bundle": "^2.6 || ^3.0 || ^4.0",
+        "knplabs/knp-paginator-bundle": "^2.6 || ^3.0 || ^4.0 || ^5.0",
         "symfony/config": "^2.8 || ^3.0 || ^4.0",
         "symfony/console": "^2.8 || ^3.0 || ^4.0",
         "symfony/dependency-injection": "^2.8 || ^3.0 || ^4.0",