Merge Travis configs
 Merge composer.json
Merge configuration
Merge PHPUnit config
Create separate installation doc
Change namespace to FOS
Support Symfony 2.4 and drop 2.1/2.2 support
Remove cURL check
Fix search/replace mistake
Fix typo
Make contributors homepage URL forwards-compatible
Merge branch 'merge-bundles' of github.com:ddeboer/FOSHttpCacheBundle into merge-bundles
Set up Travis for integration tests