add PHP 5.6 to .travis.yml
Merge pull request #10 from sasezaki/patch-1

add PHP 5.6 to .travis.yml
Support symfony >= 2.4
Merge pull request #11 from crocos/feature/change-dependency-package-version

Support symfony >= 2.4
Add LICENSE file
Change to use PSR-4 style autoloading
Merge branch 'develop'