LoggerInterface is deprecated since 2.2, to be removed in 3.0.

Docs says to type-hint \Psr\Log\LoggerInterface instead.
LoggerInterface is deprecated since 2.2, to be removed in 3.0.
Docs says to type-hint \Psr\Log\LoggerInterface instead.
Add "psr/log": "~1.0" to composer.json
Update symfony version constraint to ~2.2 in composer.json
Merge pull request #77 from sbacelic/master

Symfony\Component\HttpKernel\Log\LoggerInterface is deprecated since 2.2