update to PSR-4
updated the changelog
start 1.1 branch
prepare 1.2 development
Merge pull request #107 from xabbuh/psr4

update to PSR-4
Made .travis.yml consistent
Reduced amount of travis jobs

Refs https://github.com/symfony-cmf/Testing/issues/42
Merge branch '1.0' into 1.1
Update travis versions
Merge branch '1.1'
Fixed travis file
Merge branch '1.0' into 1.1
Merge branch '1.1'
Merge branch 'master' of github.com:symfony-cmf/MediaBundle into imagine-fix