Provide MatcherInterface when extending ListRenderer
Bumped the composer constraint to allow Symfony 2.2
Update README.md

add KnpMenuBundle badge with scores gained knpbundles.com 
Backported the testsuite fix for Symfony 2.1
Fixed the compatibility with Symfony 2.2

Replaces #158
Merge branch '1.1.x'

Conflicts:
	composer.json
Merge pull request #135 from mdhooge/patch-1

Provide MatcherInterface when extending ListRenderer